Niels Charlier ( 
https://osgeo-org.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1d2c4019-de4e-4624-8b27-2486941601cf
 ) *created* an issue

GeoServer ( 
https://osgeo-org.atlassian.net/browse/GEOS?atlOrigin=eyJpIjoiZTJiMDFiODhlNzE1NDRiYTlmNTBlMWQwODFlYzExNDYiLCJwIjoiaiJ9
 ) / Bug ( 
https://osgeo-org.atlassian.net/browse/GEOS-9730?atlOrigin=eyJpIjoiZTJiMDFiODhlNzE1NDRiYTlmNTBlMWQwODFlYzExNDYiLCJwIjoiaiJ9
 ) GEOS-9730 ( 
https://osgeo-org.atlassian.net/browse/GEOS-9730?atlOrigin=eyJpIjoiZTJiMDFiODhlNzE1NDRiYTlmNTBlMWQwODFlYzExNDYiLCJwIjoiaiJ9
 ) WMSInfoImpl cannot be serialized any more ( 
https://osgeo-org.atlassian.net/browse/GEOS-9730?atlOrigin=eyJpIjoiZTJiMDFiODhlNzE1NDRiYTlmNTBlMWQwODFlYzExNDYiLCJwIjoiaiJ9
 )

Issue Type: Bug Assignee: Niels Charlier ( 
https://osgeo-org.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1d2c4019-de4e-4624-8b27-2486941601cf
 ) Created: 08/Sep/20 1:42 PM Priority: Medium Reporter: Niels Charlier ( 
https://osgeo-org.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1d2c4019-de4e-4624-8b27-2486941601cf
 )

In https://osgeo-org.atlassian.net/browse/GEOS-8827 , a non-serializable 
attribute was added to serializable class WMSInfoImpl

Resulting in following stack trace (When you use hazelcast clustering, this can 
actually cause serious problems):

org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream$ObjectCheckException:
 The object type is not Serializable!
A problem occurred while checking object with type: 
org.geoserver.wms.CacheConfiguration
Field hierarchy is:
43 [class=org.geoserver.wms.web.WMSAdminPage, path=43]
private java.lang.Object org.apache.wicket.MarkupContainer.children 
[class=java.util.ArrayList]
org.apache.wicket.Component org.geoserver.web.wicket.GeoServerDialog.userPanel 
[write:99] [write:101] [class=org.apache.wicket.markup.html.form.Form, 
path=43:form]
private java.lang.Object org.apache.wicket.MarkupContainer.children 
[class=org.apache.commons.collections4.map.LinkedMap]
private java.lang.Object org.apache.wicket.MarkupContainer.children [write:1] 
[write:2] 
[class=org.geoserver.web.services.BaseServiceAdminPage$LocalWorkspacePanel, 
path=43:form:workspace]
private java.lang.Object org.apache.wicket.MarkupContainer.children 
[class=org.apache.wicket.markup.html.basic.Label, 
path=43:form:workspace:workspace]
java.lang.Object org.apache.wicket.Component.data 
[class=org.apache.wicket.model.PropertyModel]
private java.lang.Object org.apache.wicket.model.ChainingModel.target 
[class=com.sun.proxy.$Proxy62]
protected java.lang.reflect.InvocationHandler java.lang.reflect.Proxy.h 
[class=org.geoserver.catalog.impl.ModificationProxy]
java.lang.Object org.geoserver.catalog.impl.ModificationProxy.proxyObject 
[class=org.geoserver.wms.WMSInfoImpl]
private org.geoserver.wms.CacheConfiguration 
org.geoserver.wms.WMSInfoImpl.cacheConfiguration 
[class=org.geoserver.wms.CacheConfiguration] <----- field that is causing the 
problem
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:358)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)

at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.access$500(CheckingObjectOutputStream.java:60)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream$1InterceptingObjectOutputStream.replaceObject(CheckingObjectOutputStream.java:486)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1144)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at 
org.apache.commons.collections4.map.AbstractHashedMap.doWriteObject(AbstractHashedMap.java:1234)
at org.apache.commons.collections4.map.LinkedMap.writeObject(LinkedMap.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1140)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:494)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.access$500(CheckingObjectOutputStream.java:60)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream$1InterceptingObjectOutputStream.replaceObject(CheckingObjectOutputStream.java:486)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1144)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at java.util.ArrayList.writeObject(ArrayList.java:766)
at sun.reflect.GeneratedMethodAccessor256.invoke(Unknown Source)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1140)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:494)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.checkFields(CheckingObjectOutputStream.java:594)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.internalCheck(CheckingObjectOutputStream.java:530)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.check(CheckingObjectOutputStream.java:341)
at 
org.apache.wicket.core.util.objects.checker.CheckingObjectOutputStream.writeObjectOverride(CheckingObjectOutputStream.java:662)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at 
org.apache.wicket.serialize.java.JavaSerializer$SerializationCheckerObjectOutputStream.writeObjectOverride(JavaSerializer.java:267)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at 
org.apache.wicket.serialize.java.JavaSerializer.serialize(JavaSerializer.java:78)
at 
org.apache.wicket.pageStore.AbstractPageStore.serializePage(AbstractPageStore.java:133)
at 
org.apache.wicket.pageStore.DefaultPageStore.createSerializedPage(DefaultPageStore.java:281)
at 
org.apache.wicket.pageStore.DefaultPageStore.storePage(DefaultPageStore.java:61)
at 
org.apache.wicket.page.PageStoreManager$PersistentRequestAdapter.storeTouchedPages(PageStoreManager.java:413)
at org.apache.wicket.page.RequestAdapter.commitRequest(RequestAdapter.java:193)
at 
org.apache.wicket.page.AbstractPageManager.commitRequest(AbstractPageManager.java:76)
at 
org.apache.wicket.page.PageManagerDecorator.commitRequest(PageManagerDecorator.java:74)
at 
org.apache.wicket.page.PageAccessSynchronizer$2.commitRequest(PageAccessSynchronizer.java:270)
at org.apache.wicket.Application$3.onDetach(Application.java:1789)
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:120)
at 
org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:144)
at 
org.apache.wicket.util.listener.ListenerCollection.reversedNotifyIgnoringExceptions(ListenerCollection.java:113)
at 
org.apache.wicket.request.cycle.RequestCycleListenerCollection.onDetach(RequestCycleListenerCollection.java:100)
at org.apache.wicket.request.cycle.RequestCycle.onDetach(RequestCycle.java:649)
at org.apache.wicket.request.cycle.RequestCycle.detach(RequestCycle.java:594)
at 
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:297)
at 
org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:261)
at 
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:203)
at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at 
org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:165)
at 
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177)
at 
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52)
at 
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
at 
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
at 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:998)
at 
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:890)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at 
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:875)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at 
be.milieuinfo.healthcheck.web.filter.HealthCheckFilter.doFilter(HealthCheckFilter.java:43)
at 
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
at 
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at 
org.geoserver.filters.ThreadLocalsCleanupFilter.doFilter(ThreadLocalsCleanupFilter.java:26)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at 
org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:69)
at org.geoserver.wms.animate.AnimatorFilter.doFilter(AnimatorFilter.java:73)
at 
org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:66)
at be.milieuinfo.geoserver.version.VersionFilter.doFilter(VersionFilter.java:32)
at 
org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:66)
at 
org.geoserver.filters.SpringDelegatingFilter.doFilter(SpringDelegatingFilter.java:41)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at 
org.geoserver.platform.AdvancedDispatchFilter.doFilter(AdvancedDispatchFilter.java:37)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:70)
at 
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
at 
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:74)
at 
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:70)
at 
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:74)
at 
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
org.geoserver.security.filter.GeoServerAnonymousAuthenticationFilter.doFilter(GeoServerAnonymousAuthenticationFilter.java:51)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:70)
at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:74)
at 
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
at 
org.geoserver.security.filter.GeoServerUserNamePasswordAuthenticationFilter.doFilter(GeoServerUserNamePasswordAuthenticationFilter.java:112)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:70)
at 
org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:74)
at 
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
be.milieuinfo.geoserver.openam.OpenAMSSORedirectFilter.doFilter(OpenAMSSORedirectFilter.java:43)
at 
be.milieuinfo.geoserver.openam.OpenAMSSORedirectFilter.doFilter(OpenAMSSORedirectFilter.java:34)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
be.milieuinfo.security.openam.spring.security.OpenAMSSOAuthenticationFilter.doFilter(OpenAMSSOAuthenticationFilter.java:45)
at 
be.milieuinfo.geoserver.openam.DelegatingGeoServerSecurityFilter.doFilter(DelegatingGeoServerSecurityFilter.java:21)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
be.milieuinfo.security.openam.spring.security.OpenAMSSOTokenAuthenticationProcessingFilter.doFilter(OpenAMSSOTokenAuthenticationProcessingFilter.java:47)
at 
be.milieuinfo.geoserver.openam.DelegatingGeoServerSecurityFilter.doFilter(DelegatingGeoServerSecurityFilter.java:21)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:70)
at 
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
at 
org.geoserver.security.filter.GeoServerSecurityContextPersistenceFilter$1.doFilter(GeoServerSecurityContextPersistenceFilter.java:52)
at 
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:74)
at 
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
at 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at 
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
at 
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
at 
org.geoserver.security.GeoServerSecurityFilterChainProxy.doFilter(GeoServerSecurityFilterChainProxy.java:142)
at 
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
at 
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:90)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:42)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.geoserver.filters.SessionDebugFilter.doFilter(SessionDebugFilter.java:46)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.geoserver.filters.FlushSafeFilter.doFilter(FlushSafeFilter.java:42)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at com.hazelcast.web.WebFilter.doFilter(WebFilter.java:296)
at 
org.geoserver.cluster.hazelcast.web.HzSessionShareFilter.doFilter(HzSessionShareFilter.java:112)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at 
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
at 
org.apache.catalina.valves.CometConnectionManagerValve.invoke(CometConnectionManagerValve.java:167)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:684)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
at 
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)
at 
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
at 
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539)
at 
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495)
at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at 
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.NotSerializableException: 
org.geoserver.wms.CacheConfiguration
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at 
org.apache.commons.collections4.map.AbstractHashedMap.doWriteObject(AbstractHashedMap.java:1234)
at org.apache.commons.collections4.map.LinkedMap.writeObject(LinkedMap.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1140)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at java.util.ArrayList.writeObject(ArrayList.java:766)
at sun.reflect.GeneratedMethodAccessor256.invoke(Unknown Source)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1140)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at 
org.apache.wicket.serialize.java.JavaSerializer$SerializationCheckerObjectOutputStream.writeObjectOverride(JavaSerializer.java:256)
... 143 more

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