Hi Malte, Hmmm... I have never seen this happening in all the time I have used wicket (since the early beta’s!).
>From your stack traces it looks like you are using standard java serialization. I also only see the thread waiting for the page to unlock, no other threads are working on pages. I see you have enabled debug logging for DefaultPageLockManager; It should also be releasing locks (‘[thread]’ released lock to page [id]). I recommend setting some breakpoints to see whether (a) DPLM#unlockAllPages() and DPLM#unlockPage() are called or not, (b) *if* they are called, if the pageLockIterator is empty (so basically, inspect this.locks). Should the methods not be called, there is a problem higher up the call stack. But they should be called, according to the wicket sources. Do you have a vanilla wicket app or are you using any custom code for session mgt? Met vriendelijke groet, Kind regards, Bas Gooren Op 20 nov 2025, 13:13:50 schreef Malte <[email protected] >: > I’ve solved the serialization issue—at least I haven’t seen any errors. > However, the page-lock problem still persists. > Here is an excerpt from the page log: > 2025-11-20 13:03:49,953 DEBUG > org.apache.wicket.page.DefaultPageLockManager:105 - 'qtp32070961-55' > attempting to acquire lock to page with id '0' > 2025-11-20 13:03:49,953 DEBUG > org.apache.wicket.page.DefaultPageLockManager:131 - qtp32070961-55 acquired > lock to page 0 > 2025-11-20 13:03:50,858 DEBUG > org.apache.wicket.page.DefaultPageLockManager:105 - 'qtp32070961-55' > attempting to acquire lock to page with id '0' > 2025-11-20 13:03:50,859 DEBUG > org.apache.wicket.page.DefaultPageLockManager:131 - qtp32070961-55 acquired > lock to page 0 > 2025-11-20 13:03:57,664 DEBUG > org.apache.wicket.page.DefaultPageLockManager:105 - 'qtp32070961-56' > attempting to acquire lock to page with id '0' > 2025-11-20 13:03:57,664 DEBUG > org.apache.wicket.page.PageAccessSynchronizer:252 - qtp32070961-55 waiting > for lock to page 0 for PT1M > 2025-11-20 13:04:57,666 WARN > org.apache.wicket.page.DefaultPageLockManager:140 - Thread 'qtp32070961-56' > failed to acquire lock to page with id '0', attempted for PT1M0.0025716S > out of allowed PT1M. The thread that holds the lock has name > 'qtp32070961-55'. > 2025-11-20 13:04:57,669 WARN > org.apache.wicket.page.DefaultPageLockManager:114 - "qtp32070961-55" prio=5 > tid=55 state=TIMED_WAITING > org.apache.wicket.util.lang.Threads$ThreadDump > at [email protected]/jdk.internal.misc.Unsafe.park(Native Method) > at [email protected] > /java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252) > at [email protected] > /java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:1679) > at > app//org.eclipse.jetty.util.thread.AutoLock$WithCondition.awaitNanos(AutoLock.java:194) > at > app//org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:273) > at > app//org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.idleJobPoll(QueuedThreadPool.java:1169) > at > app//org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1186) > at [email protected]/java.lang.Thread.run(Thread.java:840) > 2025-11-20 13:04:57,687 DEBUG > org.apache.wicket.page.DefaultPageLockManager:105 - 'qtp32070961-56' > attempting to acquire lock to page with id '1' > 2025-11-20 13:04:57,687 DEBUG > org.apache.wicket.page.DefaultPageLockManager:131 - qtp32070961-56 acquired > lock to page 1 > 2025-11-20 13:04:57,713 DEBUG > org.apache.wicket.page.DefaultPageLockManager:105 - 'qtp32070961-56' > attempting to acquire lock to page with id '1' > 2025-11-20 13:04:57,713 DEBUG > org.apache.wicket.page.DefaultPageLockManager:131 - qtp32070961-56 acquired > lock to page 1 > 2025-11-20 13:04:57,727 DEBUG > org.apache.wicket.page.DefaultPageLockManager:105 - 'qtp32070961-56' > attempting to acquire lock to page with id '1' > 2025-11-20 13:04:57,727 DEBUG > org.apache.wicket.page.DefaultPageLockManager:131 - qtp32070961-56 acquired > lock to page 1 > > It looks to me as if the page lock is not being released. > I’ve attached the complete Wicket log file again. > > Am Do., 20. Nov. 2025 um 11:17 Uhr schrieb Bas Gooren <[email protected] > >: > >> Hi Malte, >> >> I don’t see anything off in your thread dump. >> >> Thread qtp23808661-65 is not doing anything. >> None of the other threads is doing anything relevant either. >> >> Thread qtp23808661-63 is waiting for the page to unlock. >> >> So that points in the direction of something like this: >> >> T1 qtp23808661-65 handles a page request for page 0 >> T1 qtp23808661-65 locks the page and tries to serialize it, fails, and >> does >> not unlock the page >> T2 qtp23808661-63 handles a page request for page 0, finds it, but throws >> after 60 seconds because it is still locked >> >> Try to add the following when starting your JVM: >> >> --add-opens=java.base/java.lang=ALL-UNNAMED \ >> --add-opens=java.base/java.io=ALL-UNNAMED \ >> --add-opens=java.base/java.util=ALL-UNNAMED \ >> --add-opens=java.base/java.util.concurrent=ALL-UNNAMED \ >> --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED >> >> (This is the default add-opens statements that Apache Tomcat adds for Java >> >= 9) >> >> That will fix your serialization error ("module java.base does not "opens >> java.io" to unnamed module @1479e3f”) for now. >> >> Can you check if that (also) fixes your page locking issue? >> >> Normally a serialization issue should not lead to a “lost” lock on the >> page >> (just browsing PageAccessSynchronizer I see that semantically this should >> never happen: in the nested IPageManager implementation, in detach(), it >> unlocks all pages in a “finally” block). >> But if that happens here, it’s something to debug after confirming. >> >> Met vriendelijke groet, >> Kind regards, >> >> Bas Gooren >> >> >> Op 20 nov 2025, 10:52:30 schreef Malte <[email protected] >> .invalid >> >: >> >> > Here is a thread dump attached that I created in the IDE. I hope it's >> > correct—I haven't needed something like this before. >> > The error message is: >> > >> > *org.apache.wicket.page.PageLockedException: This thread qtp23808661-65 >> > holds the lock to page 0* >> > >> > The serialization issue still exists; I still need to think about how >> I’m >> > going to solve that. >> > >> > >> > Am Do., 20. Nov. 2025 um 10:28 Uhr schrieb Bas Gooren >> <[email protected] >> > >: >> > >> >> Hi Malte, >> >> >> >> Your serialization error is something to investigate, yes. But I doubt >> >> that >> >> is what locks the page so long. >> >> It does look like serialization is broken because you upgraded to a >> more >> >> modern JVM, which requires opening modules for serialization. >> >> (Wicket 6.x was targeting java 6, wicket 10 targets java 17). >> >> >> >> As Martin suggested: probably a good idea to look at a thread dump >> right >> >> after you click on the button. >> >> >> >> After looking again at your first message, I see that your button click >> >> request is the one that submits the search form in your topbar [1]. It >> >> waits for 1 minute and then times out as it cannot get a lock on the >> page. >> >> >> >> That means that something else holds the lock on the page. >> >> >> >> I would click on the button, and then make a thread dump [2]. That will >> >> give you an idea of what all threads are doing and when you get another >> >> exception reported like "PageLockedException: This thread qtp5287243-65 >> >> holds the lock to page 0”, you can look at what that thread is/was >> doing >> >> to >> >> hold the page lock. >> >> >> >> In your first message the thread ids were missing from the logs, so we >> >> can’t see what kind of request thread qtp5287243-65 was processing. >> >> In your second message the page lock exception doesn’t make any sense: >> >> >> >> "qtp27122009-55 holds the lock to page 0” => in your logs we can see >> >> that qtp27122009-55 ends the request at 5108, while your Ajax request >> >> (qtp27122009-54) doesn’t start until 66973. >> >> >> >> => That would point in the direction of something *after* the request >> that >> >> holds a lock on the page. Which could certainly be the serializer. >> >> But that is easy to confirm with the thread dump 🙂 >> >> >> >> 1] >> >> >> >> >> ?0-1.0-topbar-search_form-search_form_submit&0-1.-topbar-search_form&search_form_text=a&search_form_submit=1&_=1763552644294 >> >> >> >> 2] find the relevant pid by running “jps” and then run “jstack -l >> <pid>" >> >> >> >> Met vriendelijke groet, >> >> Kind regards, >> >> >> >> Bas Gooren >> >> >> >> >> >> Op 20 nov 2025, 10:05:06 schreef Malte <[email protected] >> >> .invalid >> >> >: >> >> >> >> > The log output above was one I produced myself using System.out in >> the >> >> > request cycle. I just realized that my logger wasn’t configured >> >> correctly >> >> > and therefore didn’t log anything. After configuring it properly, I >> >> noticed >> >> > this output: >> >> > >> >> > SerializableChecker not available >> >> > java.lang.reflect.InaccessibleObjectException: Unable to make static >> >> > java.io.ObjectStreamClass >> >> > java.io.ObjectStreamClass.lookup(java.lang.Class,boolean) accessible: >> >> > module java.base does not "opens java.io" to unnamed module @1479e3f >> >> > at >> >> > >> >> > >> >> >> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) >> >> > at >> >> > >> >> > >> >> >> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) >> >> > at >> >> > >> >> >> java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:200) >> >> > at java.base/java.lang.reflect.Method.setAccessible(Method.java:194) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.<clinit>(CheckingObjectOutputStream.java:253) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.serialize.java.JavaSerializer$SerializationCheckerObjectOutputStream.writeObjectOverride(JavaSerializer.java:387) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject(ObjectOutputStream.java:346) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.serialize.java.JavaSerializer.serialize(JavaSerializer.java:97) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.SerializingPageStore.addPage(SerializingPageStore.java:80) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.CachingPageStore.addPage(CachingPageStore.java:73) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.RequestPageStore.detach(RequestPageStore.java:114) >> >> > at org.apache.wicket.page.PageManager.detach(PageManager.java:91) >> >> > at org.apache.wicket.Application$2.onDetach(Application.java:1589) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:105) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:101) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection$1.notify(ListenerCollection.java:121) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:145) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection.reversedNotifyIgnoringExceptions(ListenerCollection.java:114) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection.onDetach(RequestCycleListenerCollection.java:100) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.onDetach(RequestCycle.java:673) >> >> > at >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.detach(RequestCycle.java:628) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:285) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:208) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:307) >> >> > at >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1592) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1554) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:807) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:442) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:469) >> >> > at >> >> > >> >> >> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:719) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1220) >> >> > at org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:859) >> >> > at org.eclipse.jetty.server.Server.handle(Server.java:195) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:680) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:411) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1809) >> >> > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$SslEndPoint.onFillable(SslConnection.java:614) >> >> > at >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:415) >> >> > at >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:156) >> >> > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) >> >> > at >> >> > >> >> > org.eclipse.jetty.io >> >> .SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:492) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.epcRunTask(AdaptiveExecutionStrategy.java:428) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:401) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:255) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.produce(AdaptiveExecutionStrategy.java:196) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1239) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194) >> >> > at java.base/java.lang.Thread.run(Thread.java:840) >> >> > Error serializing object class >> >> > de.prisma.one.servlet.gui.wicket.customer.CustomerPage [object=[Page >> >> class >> >> > = de.prisma.one.servlet.gui.wicket.customer.CustomerPage, id = 0, >> render >> >> > count = 1]] >> >> > java.io.NotSerializableException: de.prisma.one.core.CoreSession >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1187) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject(ObjectOutputStream.java:350) >> >> > at java.base/java.util.ArrayList.writeObject(ArrayList.java:866) >> >> > at >> >> java.base/jdk.internal.reflect.GeneratedMethodAccessor8.invoke(Unknown >> >> > Source) >> >> > at >> >> > >> >> > >> >> >> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> >> > at java.base/java.lang.reflect.Method.invoke(Method.java:569) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1070) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1516) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject(ObjectOutputStream.java:350) >> >> > at java.base/java.util.ArrayList.writeObject(ArrayList.java:866) >> >> > at >> >> java.base/jdk.internal.reflect.GeneratedMethodAccessor8.invoke(Unknown >> >> > Source) >> >> > at >> >> > >> >> > >> >> >> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> >> > at java.base/java.lang.reflect.Method.invoke(Method.java:569) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1070) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1516) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject(ObjectOutputStream.java:350) >> >> > at java.base/java.util.ArrayList.writeObject(ArrayList.java:866) >> >> > at >> >> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native >> >> > Method) >> >> > at >> >> > >> >> > >> >> >> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) >> >> > at >> >> > >> >> > >> >> >> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> >> > at java.base/java.lang.reflect.Method.invoke(Method.java:569) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1070) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1516) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1572) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1529) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1438) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject(ObjectOutputStream.java:350) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.serialize.java.JavaSerializer$SerializationCheckerObjectOutputStream.writeObjectOverride(JavaSerializer.java:383) >> >> > at >> >> > >> >> > java.base/java.io >> >> .ObjectOutputStream.writeObject(ObjectOutputStream.java:346) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.serialize.java.JavaSerializer.serialize(JavaSerializer.java:97) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.SerializingPageStore.addPage(SerializingPageStore.java:80) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.CachingPageStore.addPage(CachingPageStore.java:73) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.RequestPageStore.detach(RequestPageStore.java:114) >> >> > at org.apache.wicket.page.PageManager.detach(PageManager.java:91) >> >> > at org.apache.wicket.Application$2.onDetach(Application.java:1589) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:105) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:101) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection$1.notify(ListenerCollection.java:121) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:145) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection.reversedNotifyIgnoringExceptions(ListenerCollection.java:114) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection.onDetach(RequestCycleListenerCollection.java:100) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.onDetach(RequestCycle.java:673) >> >> > at >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.detach(RequestCycle.java:628) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:285) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:208) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:307) >> >> > at >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1592) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1554) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:807) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:442) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:469) >> >> > at >> >> > >> >> >> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:719) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1220) >> >> > at org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:859) >> >> > at org.eclipse.jetty.server.Server.handle(Server.java:195) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:680) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:411) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1809) >> >> > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$SslEndPoint.onFillable(SslConnection.java:614) >> >> > at >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:415) >> >> > at >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:156) >> >> > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) >> >> > at >> >> > >> >> > org.eclipse.jetty.io >> >> .SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:492) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.epcRunTask(AdaptiveExecutionStrategy.java:428) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:401) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:255) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.produce(AdaptiveExecutionStrategy.java:196) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1239) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194) >> >> > at java.base/java.lang.Thread.run(Thread.java:840) >> >> > Error invoking listener: org.apache.wicket.Application$2@eedad7 >> >> > java.lang.IllegalArgumentException: Argument 'data' may not be null. >> >> > at org.apache.wicket.util.lang.Args.notNull(Args.java:41) >> >> > at >> >> > >> >> >> org.apache.wicket.pageStore.SerializedPage.<init>(SerializedPage.java:64) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.SerializingPageStore.addPage(SerializingPageStore.java:80) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.CachingPageStore.addPage(CachingPageStore.java:73) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.pageStore.RequestPageStore.detach(RequestPageStore.java:114) >> >> > at org.apache.wicket.page.PageManager.detach(PageManager.java:91) >> >> > at org.apache.wicket.Application$2.onDetach(Application.java:1589) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:105) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:101) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection$1.notify(ListenerCollection.java:121) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:145) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.util.listener.ListenerCollection.reversedNotifyIgnoringExceptions(ListenerCollection.java:114) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycleListenerCollection.onDetach(RequestCycleListenerCollection.java:100) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.onDetach(RequestCycle.java:673) >> >> > at >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.detach(RequestCycle.java:628) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:285) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:208) >> >> > at >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:307) >> >> > at >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1592) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1554) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:807) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:442) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:469) >> >> > at >> >> > >> >> >> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:719) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1220) >> >> > at org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:859) >> >> > at org.eclipse.jetty.server.Server.handle(Server.java:195) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:680) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:411) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1809) >> >> > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$SslEndPoint.onFillable(SslConnection.java:614) >> >> > at >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:415) >> >> > at >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:156) >> >> > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) >> >> > at >> >> > >> >> > org.eclipse.jetty.io >> >> .SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:492) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.epcRunTask(AdaptiveExecutionStrategy.java:428) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:401) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:255) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.produce(AdaptiveExecutionStrategy.java:196) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1239) >> >> > at >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194) >> >> > at java.base/java.lang.Thread.run(Thread.java:840) >> >> > >> >> > I’ll now continue looking on my own to find out what isn’t >> serializable. >> >> > >> >> > Am Mi., 19. Nov. 2025 um 22:31 Uhr schrieb Martin Grigorov < >> >> > [email protected]>: >> >> > >> >> > On Wed, Nov 19, 2025 at 3:33 PM Malte <[email protected] >> >> > >> >> > .invalid> >> >> > >> >> > wrote: >> >> > >> >> > >> >> > > Thank you for the quick response. >> >> > >> >> > > >> >> > >> >> > > >> >> > >> >> > > I’ve tried it again now and had the corresponding thread displayed >> — >> >> this >> >> > >> >> > > time with a different name. I’ve also added the thread to the log. >> >> > >> >> > > >> >> > >> >> > > The thrown exception is this one: >> >> > >> >> > > org.apache.wicket.page.PageLockedException: This thread >> >> qtp27122009-55 >> >> > >> >> > > holds the lock to page 0 >> >> > >> >> > > >> >> > >> >> > > >> >> > >> >> > > Log output: >> >> > >> >> > > >> >> > >> >> > > qtp27122009-55>>> 3828 onBeginRequest: >> >> > >> >> > > qtp27122009-55<<< 3838 onRequestHandlerResolved [10ms]: >> >> > >> >> > > RenderPageRequestHandler >> >> > >> >> > > qtp27122009-55=== 5108 onEndRequest [1280ms] >> >> > >> >> > > >> >> > >> >> > I don't know what kind of log file format this is. >> >> > >> >> > >> >> > In your web server stdout you should see a thread dump of all >> threads. >> >> One >> >> > >> >> > of the threads should have a name "qtp27122009-55". It stack trace >> >> should >> >> > >> >> > tell you what exactly hangs. >> >> > >> >> > If you run your app on Linux you can also use "kill -3 YOUR_APP_PID" >> to >> >> get >> >> > >> >> > the thread dump. >> >> > >> >> > >> >> > >> >> > > qtp27122009-63>>> 5234 onBeginRequest: ?0 >> >> > >> >> > > qtp27122009-63<<< 5234 onRequestHandlerResolved [0ms]: >> >> > >> >> > > BufferedResponseRequestHandler >> >> > >> >> > > qtp27122009-63=== 5245 onEndRequest [11ms] ?0 >> >> > >> >> > > qtp27122009-64>>> 5280 onBeginRequest: css/prisma_style_1600.css >> >> > >> >> > > qtp27122009-64=== 5281 onEndRequest [1ms] css/prisma_style_1600.css >> >> > >> >> > > qtp27122009-55>>> 5285 onBeginRequest: wic >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> ket/resource/org.apache.wicket.resource.JQueryResourceReference/jquery/jquery-3.7.1-ver-1763474747505.js >> >> > >> >> > > qtp27122009-55<<< 5286 onRequestHandlerResolved [1ms]: >> >> > >> >> > > ResourceReferenceRequestHandler >> >> > >> >> > > qtp27122009-57>>> 5289 onBeginRequest: >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> wicket/resource/org.apache.wicket.ajax.AbstractDefaultAjaxBehavior/res/js/wicket-ajax-jquery-ver-1763474747505.js >> >> > >> >> > > qtp27122009-57<<< 5290 onRequestHandlerResolved [1ms]: >> >> > >> >> > > ResourceReferenceRequestHandler >> >> > >> >> > > qtp27122009-57=== 5293 onEndRequest [4ms] >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> wicket/resource/org.apache.wicket.ajax.AbstractDefaultAjaxBehavior/res/js/wicket-ajax-jquery-ver-1763474747505.js >> >> > >> >> > > qtp27122009-58>>> 5293 onBeginRequest: >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteButtonBehavior/AutocompleteButtonBehavior-ver-1693220747281.js >> >> > >> >> > > qtp27122009-55=== 5293 onEndRequest [0ms] >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> wicket/resource/org.apache.wicket.resource.JQueryResourceReference/jquery/jquery-3.7.1-ver-1763474747505.js >> >> > >> >> > > qtp27122009-58<<< 5293 onRequestHandlerResolved [0ms]: >> >> > >> >> > > ResourceReferenceRequestHandler >> >> > >> >> > > qtp27122009-58=== 5295 onEndRequest [2ms] >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteButtonBehavior/AutocompleteButtonBehavior-ver-1693220747281.js >> >> > >> >> > > qtp27122009-70>>> 5307 onBeginRequest: >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteBehavior/wicket-autocomplete-modified-ver-1693220747283.js >> >> > >> >> > > qtp27122009-70<<< 5307 onRequestHandlerResolved [0ms]: >> >> > >> >> > > ResourceReferenceRequestHandler >> >> > >> >> > > qtp27122009-58>>> 5308 onBeginRequest: js/prisma.min.js >> >> > >> >> > > qtp27122009-58=== 5309 onEndRequest [1ms] js/prisma.min.js >> >> > >> >> > > qtp27122009-70=== 5309 onEndRequest [1ms] >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteBehavior/wicket-autocomplete-modified-ver-1693220747283.js >> >> > >> >> > > qtp27122009-63>>> 5323 onBeginRequest: css/prisma_style_768.css >> >> > >> >> > > qtp27122009-63=== 5323 onEndRequest [0ms] css/prisma_style_768.css >> >> > >> >> > > qtp27122009-65>>> 5335 onBeginRequest: >> >> css/prisma_style_1024_portrait.css >> >> > >> >> > > qtp27122009-65=== 5335 onEndRequest [0ms] >> >> > >> >> > > css/prisma_style_1024_portrait.css >> >> > >> >> > > qtp27122009-66>>> 5347 onBeginRequest: css/prisma_style_1024.css >> >> > >> >> > > qtp27122009-66=== 5347 onEndRequest [0ms] css/prisma_style_1024.css >> >> > >> >> > > qtp27122009-63>>> 5359 onBeginRequest: css/prisma_style_1366.css >> >> > >> >> > > qtp27122009-63=== 5359 onEndRequest [0ms] css/prisma_style_1366.css >> >> > >> >> > > qtp27122009-56>>> 5364 onBeginRequest: css/prisma_style_1440.css >> >> > >> >> > > qtp27122009-56=== 5365 onEndRequest [1ms] css/prisma_style_1440.css >> >> > >> >> > > qtp27122009-66>>> 5386 onBeginRequest: >> fonts/NotesWeb-RegularTf.woff >> >> > >> >> > > qtp27122009-66=== 5386 onEndRequest [0ms] >> >> fonts/NotesWeb-RegularTf.woff >> >> > >> >> > > qtp27122009-58>>> 5389 onBeginRequest: fonts/prismaone-icons.woff >> >> > >> >> > > qtp27122009-69>>> 5389 onBeginRequest: >> >> > >> >> > fonts/NotesWeb-RegularItalicTf.woff >> >> > >> >> > > qtp27122009-69=== 5389 onEndRequest [0ms] >> >> > >> >> > > fonts/NotesWeb-RegularItalicTf.woff >> >> > >> >> > > qtp27122009-58=== 5389 onEndRequest [0ms] >> fonts/prismaone-icons.woff >> >> > >> >> > > qtp27122009-54>>> 66973 onBeginRequest: >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> ?0-1.0-topbar-search_form-search_form_submit&0-1.-topbar-search_form&search_form_text=b&search_form_submit=1&_=1763558058056 >> >> > >> >> > > qtp27122009-54<<< 150107 onRequestHandlerResolved [83134ms]: >> >> > >> >> > > RenderPageRequestHandler >> >> > >> >> > > qtp27122009-54=== 150127 onEndRequest [83154ms] >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> ?0-1.0-topbar-search_form-search_form_submit&0-1.-topbar-search_form&search_form_text=b&search_form_submit=1&_=1763558058056 >> >> > >> >> > > qtp27122009-72>>> 151141 onBeginRequest: wicket/page?1 >> >> > >> >> > > >> >> > >> >> > > Here is the thread in the IDE when it becomes idle: >> >> > >> >> > > [image: grafik.png] >> >> > >> >> > > >> >> > >> >> > > By the way, this is my code in Webapplication#init that generates >> the >> >> > >> >> > logs: >> >> > >> >> > > >> >> > >> >> > > final long appStartTime = System.currentTimeMillis(); >> >> > >> >> > > >> >> > >> >> > > getRequestCycleListeners().add(new IRequestCycleListener() { >> >> > >> >> > > private long startTime; >> >> > >> >> > > >> >> > >> >> > > @Override >> >> > >> >> > > public void onBeginRequest(RequestCycle cycle) { >> >> > >> >> > > startTime = System.currentTimeMillis(); >> >> > >> >> > > System.out.println(Thread.currentThread().getName() + ">>> >> "+ >> >> > >> >> > getTimeSinceAppStart() +" onBeginRequest: " + >> >> cycle.getRequest().getUrl() >> >> > ); >> >> > >> >> > > } >> >> > >> >> > > >> >> > >> >> > > @Override >> >> > >> >> > > public void onRequestHandlerResolved(RequestCycle cycle, >> >> > >> >> > IRequestHandler handler) { >> >> > >> >> > > long duration = System.currentTimeMillis() - startTime; >> >> > >> >> > > System.out.println(Thread.currentThread().getName() + "<<< >> "+ >> >> > >> >> > getTimeSinceAppStart()+" onRequestHandlerResolved [" + duration + >> "ms]: >> >> " + >> >> > >> >> > handler.getClass().getSimpleName()); >> >> > >> >> > > String url = cycle.getRequest().getUrl().toString(); >> >> > >> >> > > } >> >> > >> >> > > >> >> > >> >> > > @Override >> >> > >> >> > > public void onEndRequest(RequestCycle cycle) { >> >> > >> >> > > long duration = System.currentTimeMillis() - startTime; >> >> > >> >> > > System.out.println(Thread.currentThread().getName() + "=== >> "+ >> >> > >> >> > getTimeSinceAppStart()+" onEndRequest [" + duration + "ms] " + >> >> > >> >> > cycle.getRequest().getUrl()); >> >> > >> >> > > } >> >> > >> >> > > >> >> > >> >> > > private long getTimeSinceAppStart(){ >> >> > >> >> > > return System.currentTimeMillis() - appStartTime; >> >> > >> >> > > } >> >> > >> >> > > }); >> >> > >> >> > > >> >> > >> >> > > >> >> > >> >> > > >> >> > >> >> > > Best regards, >> >> > >> >> > > >> >> > >> >> > > Malte >> >> > >> >> > > >> >> > >> >> > > >> >> > >> >> > > Am Mi., 19. Nov. 2025 um 13:23 Uhr schrieb Martin Grigorov < >> >> > >> >> > > [email protected]>: >> >> > >> >> > > >> >> > >> >> > >> Hi, >> >> > >> >> > >> >> >> > >> >> > >> Please search for qtp5287243-65 in your logs. This is the id of >> the >> >> > >> >> > thread >> >> > >> >> > >> that received a http request but did not respond in 1 min. >> >> > >> >> > >> It seems to hand on some operation. >> >> > >> >> > >> >> >> > >> >> > >> On Wed, Nov 19, 2025 at 2:14 PM Malte < >> [email protected] >> >> > >> >> > >> .invalid> >> >> > >> >> > >> wrote: >> >> > >> >> > >> >> >> > >> >> > >> > Hello! >> >> > >> >> > >> > >> >> > >> >> > >> > I’ve picked up an old project again and upgraded it from >> version 6 >> >> to >> >> > >> >> > >> > 10.1. Now I’m running into an issue where Ajax no longer works, >> >> which >> >> > >> >> > >> > renders my application unusable. >> >> > >> >> > >> > >> >> > >> >> > >> > Since I haven’t worked on this project for quite some time, I’m >> not >> >> > >> >> > >> really >> >> > >> >> > >> > familiar with the Wicket system anymore. Maybe someone can give >> me >> >> a >> >> > >> >> > >> hint >> >> > >> >> > >> > about where I should continue looking for the cause of this >> error. >> >> > >> >> > >> > >> >> > >> >> > >> > The page loads completely, but when I click on the first Ajax >> >> button >> >> > >> >> > >> > everything freezes, and after about a minute I get this >> exception: >> >> > >> >> > >> > >> >> > >> >> > >> > class org.apache.wicket.page.CouldNotLockPageException >> >> > >> >> > >> > org.apache.wicket.page.CouldNotLockPageException: Could not >> lock >> >> page >> >> > >> >> > >> 0. >> >> > >> >> > >> > Attempt lasted PT1M >> >> > >> >> > >> > at >> >> > >> >> > >> > org.apache.wicket.page >> >> > >> >> > >> .DefaultPageLockManager.lockPage(DefaultPageLockManager.java:173) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.apache.wicket.page >> >> > >> >> > >> .PageAccessSynchronizer.lockPage(PageAccessSynchronizer.java:72) >> >> > >> >> > >> > [...] at java.base/java.lang.Thread.run(Thread.java:840) >> >> > >> >> > >> > >> >> > >> >> > >> > Caused by: >> >> > >> >> > >> > org.apache.wicket.page.PageLockedException: This thread >> >> qtp5287243-65 >> >> > >> >> > >> > holds the lock to page 0 >> >> > >> >> > >> > at sun.nio.ch.WEPoll.wait(Native Method) >> >> > >> >> > >> > [...] at java.lang.Thread.run(Thread.java:840) >> >> > >> >> > >> > >> >> > >> >> > >> > I’ve added some more logging and found the button that is likely >> >> > >> >> > causing >> >> > >> >> > >> > the issue. It only overrides onSubmit. However, the breakpoint >> in >> >> the >> >> > >> >> > >> > debugger is never hit. Here is my requestlog (first value is >> time >> >> > >> >> > since >> >> > >> >> > >> > start): >> >> > >> >> > >> > >> >> > >> >> > >> > >>> 5299 onBeginRequest: >> >> > >> >> > >> > <<< 5303 onRequestHandlerResolved [4ms]: >> RenderPageRequestHandler >> >> > >> >> > >> > === 6471 onEndRequest [1172ms] >> >> > >> >> > >> > >>> 6486 onBeginRequest: ?0 >> >> > >> >> > >> > <<< 6486 onRequestHandlerResolved [0ms]: >> >> > >> >> > BufferedResponseRequestHandler >> >> > >> >> > >> > === 6499 onEndRequest [13ms] ?0 >> >> > >> >> > >> > >>> 6546 onBeginRequest: css/prisma_style_1600.css >> >> > >> >> > >> > === 6547 onEndRequest [1ms] css/prisma_style_1600.css >> >> > >> >> > >> > >>> 6547 onBeginRequest: >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/org.apache.wicket.resource.JQueryResourceReference/jquery/jquery-3.7.1-ver-1763474747505.js >> >> > >> >> > >> > <<< 6548 onRequestHandlerResolved [1ms]: >> >> > >> >> > ResourceReferenceRequestHandler >> >> > >> >> > >> > === 6558 onEndRequest [11ms] >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/org.apache.wicket.resource.JQueryResourceReference/jquery/jquery-3.7.1-ver-1763474747505.js >> >> > >> >> > >> > >>> 6560 onBeginRequest: >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/org.apache.wicket.ajax.AbstractDefaultAjaxBehavior/res/js/wicket-ajax-jquery-ver-1763474747505.js >> >> > >> >> > >> > <<< 6560 onRequestHandlerResolved [0ms]: >> >> > >> >> > ResourceReferenceRequestHandler >> >> > >> >> > >> > === 6562 onEndRequest [2ms] >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/org.apache.wicket.ajax.AbstractDefaultAjaxBehavior/res/js/wicket-ajax-jquery-ver-1763474747505.js >> >> > >> >> > >> > >>> 6578 onBeginRequest: >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteButtonBehavior/AutocompleteButtonBehavior-ver-1693220747281.js >> >> > >> >> > >> > <<< 6578 onRequestHandlerResolved [0ms]: >> >> > >> >> > ResourceReferenceRequestHandler >> >> > >> >> > >> > === 6579 onEndRequest [1ms] >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteButtonBehavior/AutocompleteButtonBehavior-ver-1693220747281.js >> >> > >> >> > >> > >>> 6584 onBeginRequest: >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteBehavior/wicket-autocomplete-modified-ver-1693220747283.js >> >> > >> >> > >> > <<< 6584 onRequestHandlerResolved [0ms]: >> >> > >> >> > ResourceReferenceRequestHandler >> >> > >> >> > >> > === 6586 onEndRequest [2ms] >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> wicket/resource/de.prisma.one.servlet.gui.wicket.guiElements.autocomplete.AutocompleteBehavior/wicket-autocomplete-modified-ver-1693220747283.js >> >> > >> >> > >> > >>> 6586 onBeginRequest: js/prisma.min.js >> >> > >> >> > >> > === 6587 onEndRequest [1ms] js/prisma.min.js >> >> > >> >> > >> > >>> 6600 onBeginRequest: css/prisma_style_768.css >> >> > >> >> > >> > === 6600 onEndRequest [0ms] css/prisma_style_768.css >> >> > >> >> > >> > >>> 6611 onBeginRequest: css/prisma_style_1024_portrait.css >> >> > >> >> > >> > === 6611 onEndRequest [0ms] css/prisma_style_1024_portrait.css >> >> > >> >> > >> > >>> 6622 onBeginRequest: css/prisma_style_1024.css >> >> > >> >> > >> > === 6622 onEndRequest [0ms] css/prisma_style_1024.css >> >> > >> >> > >> > >>> 6633 onBeginRequest: css/prisma_style_1366.css >> >> > >> >> > >> > === 6633 onEndRequest [0ms] css/prisma_style_1366.css >> >> > >> >> > >> > >>> 6642 onBeginRequest: css/prisma_style_1440.css >> >> > >> >> > >> > === 6642 onEndRequest [0ms] css/prisma_style_1440.css >> >> > >> >> > >> > >>> 6647 onBeginRequest: fonts/NotesWeb-RegularTf.woff >> >> > >> >> > >> > === 6647 onEndRequest [0ms] fonts/NotesWeb-RegularTf.woff >> >> > >> >> > >> > >>> 6649 onBeginRequest: fonts/prismaone-icons.woff >> >> > >> >> > >> > >>> 6649 onBeginRequest: fonts/NotesWeb-RegularItalicTf.woff >> >> > >> >> > >> > === 6650 onEndRequest [1ms] fonts/prismaone-icons.woff >> >> > >> >> > >> > === 6650 onEndRequest [1ms] fonts/NotesWeb-RegularItalicTf.woff >> >> > >> >> > >> > >>> 13582 onBeginRequest: >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> ?0-1.0-topbar-search_form-search_form_submit&0-1.-topbar-search_form&search_form_text=a&search_form_submit=1&_=1763552644294 >> >> > >> >> > >> > <<< 73594 onRequestHandlerResolved [60012ms]: >> >> RenderPageRequestHandler >> >> > >> >> > >> > === 73610 onEndRequest [60028ms] >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> ?0-1.0-topbar-search_form-search_form_submit&0-1.-topbar-search_form&search_form_text=a&search_form_submit=1&_=1763552644294 >> >> > >> >> > >> > >>> 73632 onBeginRequest: wicket/page?1 --> Errorpage >> >> > >> >> > >> > >> >> > >> >> > >> > I would really appreciate any help or pointers you can offer. >> >> Thanks >> >> > >> >> > in >> >> > >> >> > >> > advance! >> >> > >> >> > >> > >> >> > >> >> > >> > Best regards, >> >> > >> >> > >> > >> >> > >> >> > >> > Malte >> >> > >> >> > >> > >> >> > >> >> > >> > >> >> > >> >> > >> > Full Stacktrace: >> >> > >> >> > >> > class org.apache.wicket.page.CouldNotLockPageException >> >> > >> >> > >> > org.apache.wicket.page.CouldNotLockPageException: Could not >> lock >> >> page >> >> > >> >> > >> 0. >> >> > >> >> > >> > Attempt lasted PT1M >> >> > >> >> > >> > at >> >> > >> >> > >> > org.apache.wicket.page >> >> > >> >> > >> .DefaultPageLockManager.lockPage(DefaultPageLockManager.java:173) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.apache.wicket.page >> >> > >> >> > >> .PageAccessSynchronizer.lockPage(PageAccessSynchronizer.java:72) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.apache.wicket.page >> >> > >> >> > >> .PageAccessSynchronizer$1.getPage(PageAccessSynchronizer.java:116) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.DefaultMapperContext.getPageInstance(DefaultMapperContext.java:101) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.core.request.handler.PageProvider$Provision.resolve(PageProvider.java:401) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.core.request.handler.PageProvider.getProvision(PageProvider.java:162) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.core.request.handler.PageProvider.wasExpired(PageProvider.java:234) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.checkExpiration(AbstractBookmarkableMapper.java:312) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.processListener(AbstractBookmarkableMapper.java:305) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.mapRequest(AbstractBookmarkableMapper.java:346) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.request.mapper.CompoundRequestMapper.mapRequest(CompoundRequestMapper.java:147) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.resolveRequestHandler(RequestCycle.java:195) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:245) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:277) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:208) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:307) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1592) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1554) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:807) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:442) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:469) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> >> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:719) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1220) >> >> > >> >> > >> > at >> >> > >> >> > >> org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:859) >> >> > >> >> > >> > at org.eclipse.jetty.server.Server.handle(Server.java:195) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:680) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:411) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1809) >> >> > >> >> > >> > at org.eclipse.jetty.io >> >> > >> >> > >> .FillInterest.fillable(FillInterest.java:105) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$SslEndPoint.onFillable(SslConnection.java:614) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:415) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> >> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:156) >> >> > >> >> > >> > at org.eclipse.jetty.io >> >> > >> >> > >> .FillInterest.fillable(FillInterest.java:105) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.eclipse.jetty.io >> >> > >> >> > >> >> .SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:492) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.epcRunTask(AdaptiveExecutionStrategy.java:428) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:401) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:255) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:204) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:312) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1239) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194) >> >> > >> >> > >> > at java.base/java.lang.Thread.run(Thread.java:840) >> >> > >> >> > >> > >> >> > >> >> > >> > Caused by: >> >> > >> >> > >> > org.apache.wicket.page.PageLockedException: This thread >> >> qtp5287243-65 >> >> > >> >> > >> > holds the lock to page 0 >> >> > >> >> > >> > at sun.nio.ch.WEPoll.wait(Native Method) >> >> > >> >> > >> > at >> >> > >> >> > >> >> sun.nio.ch.WEPollSelectorImpl.doSelect(WEPollSelectorImpl.java:111) >> >> > >> >> > >> > at >> >> sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:129) >> >> > >> >> > >> > at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:146) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.eclipse.jetty.io >> >> > >> >> > >> .ManagedSelector.nioSelect(ManagedSelector.java:183) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.eclipse.jetty.io >> >> .ManagedSelector.select(ManagedSelector.java:190) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.eclipse.jetty.io >> >> > >> >> > >> .ManagedSelector$SelectorProducer.select(ManagedSelector.java:615) >> >> > >> >> > >> > at >> >> > >> >> > >> > org.eclipse.jetty.io >> >> > >> >> > >> >> .ManagedSelector$SelectorProducer.produce(ManagedSelector.java:549) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.produceTask(AdaptiveExecutionStrategy.java:509) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:251) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:204) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:312) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1239) >> >> > >> >> > >> > at >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > >> >> > >> >> >> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194) >> >> > >> >> > >> > at java.lang.Thread.run(Thread.java:840) >> >> > >> >> > >> > >> >> > >> >> > >> > Browser >> >> > >> >> > >> > [image: grafik.png] >> >> > >> >> > >> > >> >> > >> >> > >> > >> >> > >> >> > >> > >> >> > >> >> > >> >> >> > >> >> > > >> >> > >> >> > >> >> > >> >> >> > >> > --------------------------------------------------------------------- >> > To unsubscribe, e-mail: [email protected] >> > For additional commands, e-mail: [email protected] >> > >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] >
