Apache Commons Exception

I'm running 4.3.2, and we're seeing lots of these exceptions in our logs. Any idea what's causing them and how to fix this?

2013-09-09 08:53:03,462 ERROR [TP-Processor7] [atlassian.event.internal.EventPublisherImpl] invokeListeners There was an exception thrown trying to dispatch event 'com.atlassian.confluence.event.events.content.page.PageUpdateEvent@1a643440[originalPage=page: Tech meeting, 09.09.2013 v.4 (160039036),minorEdit=false,updateTrigger=UNKNOWN,page=page: Tech meeting, 09.09.2013 v.5 (160301208),timestamp=1378731183456]' from the invoker 'com.atlassian.event.legacy.LegacyListenerHandler$LegacyListenerInvoker@a8a5485'.

-- url: /pages/doeditpage.action | page: YYYYYYYYYYY | userName: XXXXX@psu.edu | referer: https://wikispaces.psu.edu/pages/editpage.action?atl_token=734c79dc34e01065309998d73e0ae36ee500b0ac&pageId= YYYYYYYYYYY | action: doeditpage

com.thoughtworks.xstream.converters.ConversionException: Could not call org.apache.commons.collections.buffer.CircularFifoBuffer.readObject()

---- Debugging information ----

message : Could not call org.apache.commons.collections.buffer.CircularFifoBuffer.readObject()

line number : 5

path : /org.apache.commons.collections.buffer.SynchronizedBuffer/collection/org.apache.commons.collections.buffer.BoundedFifoBuffer/default/maxElements

cause-message : null

class : org.apache.commons.collections.buffer.SynchronizedBuffer

cause-exception : java.lang.reflect.InvocationTargetException

required-type : org.apache.commons.collections.buffer.CircularFifoBuffer

-------------------------------

at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callReadObject(SerializationMethodInvoker.java:75)

at com.thoughtworks.xstream.converters.reflection.SerializableConverter.unmarshal(SerializableConverter.java:360)

at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:38)

at com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(ReferenceByXPathUnmarshaller.java:39)

at com.thoughtworks.xstream.converters.reflection.ReflectionConverter.unmarshal(ReflectionConverter.java:100)

at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:38)

at com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(ReferenceByXPathUnmarshaller.java:39)

at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:99)

at com.thoughtworks.xstream.core.ReferenceByXPathMarshallingStrategy.unmarshal(ReferenceByXPathMarshallingStrategy.java:12)

at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:549)

at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:537)

at com.thoughtworks.xstream.XStream.fromXML(XStream.java:505)

at com.thoughtworks.xstream.XStream.fromXML(XStream.java:496)

at com.adaptavist.confluence.bubbles.userstats.StatsManager.loadData(StatsManager.java:113)

at com.adaptavist.confluence.bubbles.userstats.StatsManager.initData(StatsManager.java:90)

at com.adaptavist.confluence.bubbles.userstats.StatsManager.contentModified(StatsManager.java:190)

at com.adaptavist.confluence.bubbles.userstats.StatsManager.contentModified(StatsManager.java:186)

at com.adaptavist.confluence.bubbles.userstats.StatsListener.handleUpdateContentEvent(StatsListener.java:89)

at com.adaptavist.confluence.bubbles.userstats.StatsListener.handleEvent(StatsListener.java:47)

at com.atlassian.event.legacy.LegacyListenerHandler$LegacyListenerInvoker.invoke(LegacyListenerHandler.java:55)

at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$2.run(AsynchronousAbleEventDispatcher.java:60)

at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$1.execute(AsynchronousAbleEventDispatcher.java:28)

at com.atlassian.event.internal.AsynchronousAbleEventDispatcher.dispatch(AsynchronousAbleEventDispatcher.java:56)

at com.atlassian.event.internal.EventPublisherImpl.invokeListeners(EventPublisherImpl.java:151)

at com.atlassian.event.internal.EventPublisherImpl.publish(EventPublisherImpl.java:70)

at com.atlassian.event.legacy.LegacyEventManager.publishEvent(LegacyEventManager.java:36)

at com.atlassian.confluence.event.ConfluenceEventManager.publishEvent(ConfluenceEventManager.java:47)

at sun.reflect.GeneratedMethodAccessor116.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)

at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)

at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)

at com.sun.proxy.$Proxy13.publishEvent(Unknown Source)

at com.atlassian.confluence.pages.DefaultPageManager.publishUpdateEvent(DefaultPageManager.java:926)

at com.atlassian.confluence.core.DefaultContentEntityManager.saveContentEntity(DefaultContentEntityManager.java:83)

at com.atlassian.confluence.pages.DefaultPageManager.saveContentEntity(DefaultPageManager.java:866)

at sun.reflect.GeneratedMethodAccessor1961.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)

at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)

at com.atlassian.spring.interceptors.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:16)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)

at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)

at com.sun.proxy.$Proxy42.saveContentEntity(Unknown Source)

at com.atlassian.confluence.pages.actions.AbstractEditPageAction.doSaveEditPageBean(AbstractEditPageAction.java:161)

at com.atlassian.confluence.pages.actions.EditPageAction.doSaveEditPageBean(EditPageAction.java:156)

at com.atlassian.confluence.pages.actions.EditPageAction.doEdit(EditPageAction.java:236)

at sun.reflect.GeneratedMethodAccessor1960.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at com.opensymphony.xwork.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:302)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:170)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.core.ConfluenceWorkflowInterceptor.intercept(ConfluenceWorkflowInterceptor.java:64)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.xwork.interceptors.XsrfTokenInterceptor.intercept(XsrfTokenInterceptor.java:100)

at com.atlassian.confluence.xwork.ConfluenceXsrfTokenInterceptor.intercept(ConfluenceXsrfTokenInterceptor.java:25)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.security.interceptors.CaptchaInterceptor.intercept(CaptchaInterceptor.java:49)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.validation.MessageHolderInterceptor.intercept(MessageHolderInterceptor.java:42)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.util.LoggingContextInterceptor.intercept(LoggingContextInterceptor.java:49)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.core.CancellingInterceptor.intercept(CancellingInterceptor.java:23)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.xwork.HttpMethodValidationInterceptor.intercept(HttpMethodValidationInterceptor.java:72)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.security.websudo.WebSudoInterceptor.intercept(WebSudoInterceptor.java:36)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.themes.ThemeContextInterceptor.intercept(ThemeContextInterceptor.java:68)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.security.actions.PermissionCheckInterceptor.intercept(PermissionCheckInterceptor.java:57)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.setup.webwork.BootstrapAwareInterceptor.intercept(BootstrapAwareInterceptor.java:26)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.user.actions.UserAwareInterceptor.intercept(UserAwareInterceptor.java:58)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.pages.actions.CommentAwareInterceptor.intercept(CommentAwareInterceptor.java:50)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.pages.actions.PageAwareInterceptor.intercept(PageAwareInterceptor.java:150)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.spaces.actions.SpaceAwareInterceptor.intercept(SpaceAwareInterceptor.java:77)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.core.actions.LastModifiedInterceptor.intercept(LastModifiedInterceptor.java:38)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.core.ConfluenceAutowireInterceptor.intercept(ConfluenceAutowireInterceptor.java:49)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.xwork.interceptors.TransactionalInvocation.invokeAndHandleExceptions(TransactionalInvocation.java:76)

at com.atlassian.xwork.interceptors.TransactionalInvocation.invokeInTransaction(TransactionalInvocation.java:61)

at com.atlassian.xwork.interceptors.XWorkTransactionInterceptor.intercept(XWorkTransactionInterceptor.java:56)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.xwork.SetupIncompleteInterceptor.intercept(SetupIncompleteInterceptor.java:43)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.atlassian.confluence.security.interceptors.XXSSSecurityHeaderInterceptor.intercept(XXSSSecurityHeaderInterceptor.java:21)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)

at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:115)

at com.atlassian.confluence.servlet.ConfluenceServletDispatcher.serviceAction(ConfluenceServletDispatcher.java:52)

at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:199)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:44)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)

at com.atlassian.labs.botkiller.BotKillerFilter.doFilter(BotKillerFilter.java:36)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)

at com.atlassian.applinks.core.rest.context.ContextFilter.doFilter(ContextFilter.java:25)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.security.websudo.MessagesDecoratorFilter.doFilter(MessagesDecoratorFilter.java:59)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)

at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.jmx.JmxFilter.doFilter(JmxFilter.java:106)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.core.filters.ServletContextThreadLocalFilter.doFilter(ServletContextThreadLocalFilter.java:21)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:40)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.web.filter.ThreadLocalCacheFilter.doFilter(ThreadLocalCacheFilter.java:22)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.util.UserThreadLocalFilter.doFilter(UserThreadLocalFilter.java:44)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:211)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:98)

at com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:30)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:150)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)

at com.atlassian.oauth.serviceprovider.internal.servlet.OAuthFilter.doFilter(OAuthFilter.java:70)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:37)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:72)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:170)

at com.atlassian.spring.filter.FlushingSpringSessionInViewFilter.doFilterInternal(FlushingSpringSessionInViewFilter.java:29)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.util.ConfluenceErrorFilter.doFilter(ConfluenceErrorFilter.java:22)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:99)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.core.datetime.RequestTimeThreadLocalFilter.doFilter(RequestTimeThreadLocalFilter.java:35)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.gzipfilter.GzipFilter.doFilterInternal(GzipFilter.java:80)

at com.atlassian.gzipfilter.GzipFilter.doFilter(GzipFilter.java:51)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:33)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)

at com.atlassian.confluence.extra.webdav.servlet.filter.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:427)

at com.atlassian.confluence.extra.webdav.servlet.filter.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:34)

at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)

at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)

at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:58)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:43)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:54)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:25)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:44)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.core.filters.encoding.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:41)

at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:44)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:65)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)

at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)

at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)

at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)

at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)

at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)

at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)

at java.lang.Thread.run(Thread.java:724)

Caused by: java.lang.reflect.InvocationTargetException

at sun.reflect.GeneratedMethodAccessor203.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callReadObject(SerializationMethodInvoker.java:71)

... 275 more

Caused by: com.thoughtworks.xstream.converters.reflection.ObjectAccessException: Invalid final field org.apache.commons.collections.buffer.BoundedFifoBuffer.maxElements

at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.validateFieldAccess(PureJavaReflectionProvider.java:150)

at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.writeField(PureJavaReflectionProvider.java:120)

at com.thoughtworks.xstream.converters.reflection.SerializableConverter$2.defaultReadObject(SerializableConverter.java:331)

at com.thoughtworks.xstream.core.util.CustomObjectInputStream.defaultReadObject(CustomObjectInputStream.java:62)

at org.apache.commons.collections.buffer.BoundedFifoBuffer.readObject(BoundedFifoBuffer.java:150)

... 279 more

2 answers

1 accepted

This widget could not be displayed.

Hi,

Looks like it's being thrown on this action:

Invalid final field org.apache.commons.collections.buffer.BoundedFifoBuffer.maxElements

Being caused by:

Invalid final field org.apache.commons.collections.buffer.BoundedFifoBuffer.maxElements

Have you tried editing a page while in safe mode with all non-critical add-ons disabled?

[Confluence add-on safe mode|https://confluence.atlassian.com/display/UPM/Disabling+and+Enabling+Add-ons#DisablingandEnablingAdd-ons-Disablingorenablingalladd-ons(usingSafeMode)]

See if you can get the error to spring in the logs when editing the page while safe mode is enabled. This will rule out 3rd party interference.

Looking into the stack trace a bit more, there are references to community bubbles add-on. Check that it is updated to a compatible version. If it is, try disabling it and see if the issue persists.

We are also seeing this in Confluence 4.3.7 and Community Bubbles 2.0.4, but after we moved to the supported Oracle JVM 1.7.0_25. Did this get tied back to Adaptavist?

I am facing same issue as above unable to save page any idea how it can be fixed, is it something "wearied" between plugins or its java memory leak? please let me know.

This widget could not be displayed.

Thanks for the tip. We're running version 2.0.4 of Community Bubbles, which is the latest version for Confluence 4.x.

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