Aug 02, 2018 9:08:10 AM org.apache.catalina.session.StandardSession expire
SEVERE: Session event listener threw exception
java.lang.NullPointerException
	at org.uberfire.ext.security.server.CleanupSecurityCacheSessionListener.sessionDestroyed(CleanupSecurityCacheSessionListener.java:58)
	at org.apache.catalina.session.StandardSession.expire(StandardSession.java:837)
	at org.apache.catalina.session.StandardSession.expire(StandardSession.java:779)
	at org.apache.catalina.authenticator.SingleSignOn.expire(SingleSignOn.java:445)
	at org.apache.catalina.authenticator.SingleSignOn.deregister(SingleSignOn.java:405)
	at org.apache.catalina.authenticator.AuthenticatorBase.register(AuthenticatorBase.java:899)
	at org.apache.catalina.authenticator.AuthenticatorBase.logout(AuthenticatorBase.java:951)
	at org.apache.catalina.connector.Request.logout(Request.java:2695)
	at org.apache.catalina.connector.RequestFacade.logout(RequestFacade.java:1077)
	at org.uberfire.ext.security.server.ServletSecurityAuthenticationService.logout(ServletSecurityAuthenticationService.java:76)
	at org.uberfire.ext.security.server.ServletSecurityAuthenticationService$Proxy$_$$_WeldClientProxy.logout(ServletSecurityAuthenticationService$Proxy$_$$_WeldClientProxy.java)
	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 org.jboss.errai.bus.server.io.AbstractRPCMethodCallback.invokeMethodFromMessage(AbstractRPCMethodCallback.java:48)
	at org.jboss.errai.bus.server.io.VoidRPCEndpointCallback.callback(VoidRPCEndpointCallback.java:20)
	at org.jboss.errai.bus.server.io.RemoteServiceCallback.callback(RemoteServiceCallback.java:54)
	at org.jboss.errai.cdi.server.CDIExtensionPoints$2.callback(CDIExtensionPoints.java:396)
	at org.jboss.errai.bus.server.DeliveryPlan.deliver(DeliveryPlan.java:47)
	at org.jboss.errai.bus.server.ServerMessageBusImpl.sendGlobal(ServerMessageBusImpl.java:297)
	at org.jboss.errai.bus.server.SimpleDispatcher.dispatchGlobal(SimpleDispatcher.java:46)
	at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:97)
	at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:114)
	at org.jboss.errai.bus.server.servlet.DefaultBlockingServlet.doPost(DefaultBlockingServlet.java:142)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	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 org.uberfire.ext.security.server.SecureHeadersFilter.doFilter(SecureHeadersFilter.java:69)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.uberfire.ext.security.server.SecurityIntegrationFilter.doFilter(SecurityIntegrationFilter.java:57)
	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:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:606)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.kie.integration.tomcat.JACCValve.invoke(JACCValve.java:101)
	at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:291)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1100)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1538)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1494)
	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)