2015-11-24 08:41:09,676 ERROR .magnolia.ui.admincentral.AdmincentralErrorHandler: AdmincentralUI has encountered an unhandled exception. com.vaadin.server.ServerRpcManager$RpcInvocationException: Unable to invoke method call in com.vaadin.ui.JavaScript$JavaScriptCallbackRpc at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:170) at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:118) at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:291) at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:184) at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:92) at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41) at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408) at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:350) at info.magnolia.ui.admincentral.AdmincentralVaadinServlet.service(AdmincentralVaadinServlet.java:131) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:148) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.java:69) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58) at info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:67) at info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:174) at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:74) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:84) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:57) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:80) at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:94) at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.module.site.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:119) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.multisite.filters.MultiSiteFilter.doFilter(MultiSiteFilter.java:105) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:83) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73) at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:127) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.enterprise.registration.RegistrationFilter.doFilter(RegistrationFilter.java:64) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.personalization.preview.filter.PreviewFilter.doFilter(PreviewFilter.java:92) at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:148) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:128) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65) at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:107) at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:67) at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:108) at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:94) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) 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.lang.reflect.InvocationTargetException 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:497) at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:168) ... 102 more Caused by: java.lang.ClassCastException: elemental.json.impl.JreJsonNull cannot be cast to elemental.json.JsonString at elemental.json.impl.JreJsonArray.getString(JreJsonArray.java:102) at info.magnolia.personalization.preview.ui.component.IFrameNavigationTracker$1.call(IFrameNavigationTracker.java:46) at com.vaadin.server.JavaScriptCallbackHelper$1.call(JavaScriptCallbackHelper.java:80) ... 107 more