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]
>:
> 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]
>> >
>> > >> >
>> >
>> > >> >
>> >
>> > >> >
>> >
>> > >>
>> >
>> > >
>> >
>> >
>> >
>>
>
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>
