JIM throws ClassNotFoundException in JIRA Datacenter

2016-01-21 08:53:44,954 JiraTaskExectionThread-8 ERROR somavma 533x130593x7 19cvfsr 10.194.75.64,113.130.216.4 /secure/ImporterLogsPage!import.jspa [sf.ehcache.distribution.RMISynchronousCacheReplicator] Exception on replication of putNotification. RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.web.ImporterLogsPage$EmptyTaskContext (no security manager: RMI class loader disabled). Continuing...
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.web.ImporterLogsPage$EmptyTaskContext (no security manager: RMI class loader disabled)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:354)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$95(TCPTransport.java:683)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
	at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:276)
	at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:253)
	at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:162)
	at net.sf.ehcache.distribution.RMICachePeer_Stub.put(Unknown Source)
	at net.sf.ehcache.distribution.RMISynchronousCacheReplicator.replicatePutNotification(RMISynchronousCacheReplicator.java:149)
	at net.sf.ehcache.distribution.RMISynchronousCacheReplicator.notifyElementUpdated(RMISynchronousCacheReplicator.java:187)
	at net.sf.ehcache.event.RegisteredEventListeners.internalNotifyElementUpdated(RegisteredEventListeners.java:216)
	at net.sf.ehcache.event.RegisteredEventListeners.notifyElementUpdated(RegisteredEventListeners.java:194)
	at net.sf.ehcache.Cache.notifyPutInternalListeners(Cache.java:1530)
	at net.sf.ehcache.Cache.putInternal(Cache.java:1502)
	at net.sf.ehcache.Cache.put(Cache.java:1427)
	at net.sf.ehcache.Cache.put(Cache.java:1392)
	at com.atlassian.cache.ehcache.DelegatingCache.put(DelegatingCache.java:81)
	at com.atlassian.jira.task.TaskManagerImpl.refreshTaskInTaskCache(TaskManagerImpl.java:572)
	at com.atlassian.jira.task.TaskManagerImpl.access$300(TaskManagerImpl.java:58)
	at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:516)
	at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:491)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at com.atlassian.jira.task.ForkedThreadExecutor$ForkedRunnableDecorator.run(ForkedThreadExecutor.java:254)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.web.ImporterLogsPage$EmptyTaskContext (no security manager: RMI class loader disabled)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:314)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$95(TCPTransport.java:683)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	... 1 more
Caused by: java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.web.ImporterLogsPage$EmptyTaskContext (no security manager: RMI class loader disabled)
	at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:396)
	at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:186)
	at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637)
	at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264)
	at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:214)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
	at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:501)
	at net.sf.ehcache.Element.readObject(Element.java:860)  <+2> (DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1058)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
	at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:326)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:308)
	... 12 more
(...)
2016-01-21 09:14:13,102 http-bio-8080-exec-103 ERROR somavma 554x162049x12 19cvfsr 10.194.75.64,113.130.216.4 /secure/BulkCreateValidationPage!validate.jspa [sf.ehcache.distribution.RMISynchronousCacheReplicator] Exception on replication of putNotification. RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.imports.bulkcreate.web.BulkCreateValidationPage$EmptyTaskContext (no security manager: RMI class loader disabled). Continuing...
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.imports.bulkcreate.web.BulkCreateValidationPage$EmptyTaskContext (no security manager: RMI class loader disabled)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:354)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$95(TCPTransport.java:683)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
	at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:276)
	at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:253)
	at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:162)
	at net.sf.ehcache.distribution.RMICachePeer_Stub.put(Unknown Source)
	at net.sf.ehcache.distribution.RMISynchronousCacheReplicator.replicatePutNotification(RMISynchronousCacheReplicator.java:149)
	at com.atlassian.cache.ehcache.replication.rmi.RMISynchronousCacheReplicator.replicateViaCopy(RMISynchronousCacheReplicator.java:60)
	at com.atlassian.cache.ehcache.replication.rmi.RMISynchronousCacheReplicator.notifyElementPut(RMISynchronousCacheReplicator.java:48)
	at net.sf.ehcache.event.RegisteredEventListeners.internalNotifyElementPut(RegisteredEventListeners.java:180)
	at net.sf.ehcache.event.RegisteredEventListeners.notifyElementPut(RegisteredEventListeners.java:158)
	at net.sf.ehcache.Cache.notifyPutInternalListeners(Cache.java:1532)
	at net.sf.ehcache.Cache.putInternal(Cache.java:1502)
	at net.sf.ehcache.Cache.put(Cache.java:1427)
	at net.sf.ehcache.Cache.put(Cache.java:1392)
	at com.atlassian.cache.ehcache.DelegatingCache.put(DelegatingCache.java:81)
	at com.atlassian.jira.task.TaskManagerImpl.submitTask(TaskManagerImpl.java:175)
	at com.atlassian.jira.task.TaskManagerImpl.submitTask(TaskManagerImpl.java:113)  <+3> (NativeMethodAccessorImpl.java:62) (DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:134)
	at com.sun.proxy.$Proxy69.submitTask(Unknown Source)  <+3> (NativeMethodAccessorImpl.java:62) (DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy2549.submitTask(Unknown Source)
	at com.atlassian.jira.plugins.importer.imports.bulkcreate.web.BulkCreateValidationPage.doValidate(BulkCreateValidationPage.java:107)  <+3> (NativeMethodAccessorImpl.java:62) (DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at webwork.util.InjectionUtils$DefaultInjectionImpl.invoke(InjectionUtils.java:70)
	at webwork.util.InjectionUtils.invoke(InjectionUtils.java:56)  <+2> (ActionSupport.java:438) (ActionSupport.java:157)
	at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:88)
	at com.atlassian.jira.plugins.importer.web.ImporterProcessSupport.execute(ImporterProcessSupport.java:153)  <+7> (DefaultInterceptorChain.java:39) (NestedInterceptorChain.java:31) (ChainedInterceptor.java:16) (DefaultInterceptorChain.java:35) (GenericDispatcher.java:225) (GenericDispatcher.java:154) (JiraWebworkActionDispatcher.java:152)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)  <+2> (ApplicationFilterChain.java:303) (ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)  <+14> (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (ChainedFilterStepRunner.java:87) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (XContentTypeOptionsNoSniffFilter.java:22) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (HeaderSanitisingFilter.java:44) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:70)
	at com.atlassian.jira.onboarding.postsetup.ui.PostSetupAnnouncementsFilter.doFilter(PostSetupAnnouncementsFilter.java:61)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.jira.tzdetect.IncludeResourcesFilter.doFilter(IncludeResourcesFilter.java:40)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.jira.baseurl.IncludeResourcesFilter.doFilter(IncludeResourcesFilter.java:38)  <+8> (AbstractHttpFilter.java:31) (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70) (ContextFilter.java:25) (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.greenhopper.jira.filters.ClassicBoardRouter.doFilter(ClassicBoardRouter.java:59)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.mywork.client.filter.ServingRequestsFilter.doFilter(ServingRequestsFilter.java:37)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFixupFilter.doFilter(PrettyUrlsSiteMeshFixupFilter.java:36)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.prettyurls.filter.PrettyUrlsDispatcherFilter.doFilter(PrettyUrlsDispatcherFilter.java:60)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFilter.doFilter(PrettyUrlsSiteMeshFilter.java:92)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.prettyurls.filter.PrettyUrlsMatcherFilter.doFilter(PrettyUrlsMatcherFilter.java:56)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.labs.botkiller.BotKillerFilter.doFilter(BotKillerFilter.java:36)  <+26> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AccessLogFilter.java:105) (AccessLogFilter.java:89) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (XsrfTokenAdditionRequestFilter.java:54) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (SiteMeshFilter.java:181) (SiteMeshFilter.java:85) (SitemeshPageFilter.java:124) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (PageBuilderFilter.java:90) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (CommittedResponseHtmlErrorRecoveryFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:70)
	at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61)  <+22> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (SecurityFilter.java:239) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (TrustedApplicationsFilter.java:100) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (BaseLoginFilter.java:172) (JiraLoginFilter.java:70) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:70) (OAuthFilter.java:79) (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61)  <+13> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (ProfilingFilter.java:99) (JIRAProfilingFilter.java:19) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AbstractJohnsonFilter.java:71) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208)
	at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
	at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
	at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)  <+5> (UrlRewriteFilter.java:394) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:70)
	at com.atlassian.analytics.client.filter.JiraAnalyticsFilter.doFilter(JiraAnalyticsFilter.java:40)
	at com.atlassian.analytics.client.filter.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.ibm.oslc.cm.adaptor.jira.filters.SessionActivityFilter.doFilter(SessionActivityFilter.java:39)  <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
	at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61)  <+45> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (ChainedFilterStepRunner.java:87) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AbstractCachingFilter.java:33) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AbstractEncodingFilter.java:41) (AbstractHttpFilter.java:31) (PathMatchingEncodingFilter.java:49) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (JiraStartupChecklistFilter.java:79) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (MultipartBoundaryCheckFilter.java:41) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (ChainedFilterStepRunner.java:87) (JiraFirstFilter.java:61) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (GzipFilter.java:115) (GzipFilter.java:92) (JiraGzipFilter.java:56) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (StandardWrapperValve.java:220) (StandardContextValve.java:122) (AuthenticatorBase.java:501) (StandardHostValve.java:171) (ErrorReportValve.java:103) (StandardEngineValve.java:116) (AccessLogValve.java:950) (CoyoteAdapter.java:408) (AbstractHttp11Processor.java:1070) (AbstractProtocol.java:611) (JIoEndpoint.java:316)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.imports.bulkcreate.web.BulkCreateValidationPage$EmptyTaskContext (no security manager: RMI class loader disabled)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:314)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$95(TCPTransport.java:683)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	... 1 more
Caused by: java.lang.ClassNotFoundException: com.atlassian.jira.plugins.importer.imports.bulkcreate.web.BulkCreateValidationPage$EmptyTaskContext (no security manager: RMI class loader disabled)
	at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:396)
	at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:186)
	at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637)
	at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264)
	at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:214)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
	at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:501)
	at net.sf.ehcache.Element.readObject(Element.java:860)  <+2> (DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1058)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
	at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:326)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:308)
	... 12 more