java.lang.NullPointerException

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  • GitHub comment 42#47079432
    via GitHub by knockoutuser
    ,
    • java.lang.NullPointerException at org.apache.tomcat.websocket.server.WsServerContainer.unregisterAuthenticatedSession(WsServerContainer.java:367) at org.apache.tomcat.websocket.server.WsServerContainer.unregisterSession(WsServerContainer.java:344) at org.apache.tomcat.websocket.WsSession.sendCloseMessage(WsSession.java:494) at org.apache.tomcat.websocket.WsSession.doClose(WsSession.java:417) at org.apache.tomcat.websocket.WsSession.close(WsSession.java:394) at org.apache.tomcat.websocket.server.WsServerContainer.closeAuthenticatedSession(WsServerContainer.java:377) at org.apache.tomcat.websocket.server.WsSessionListener.sessionDestroyed(WsSessionListener.java:40) at org.apache.catalina.session.StandardSession.expire(StandardSession.java:808) at org.apache.catalina.session.StandardSession.isValid(StandardSession.java:658) at org.apache.catalina.session.ManagerBase.processExpires(ManagerBase.java:534) at org.apache.catalina.session.ManagerBase.backgroundProcess(ManagerBase.java:519) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1352) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1530) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1519) at java.lang.Thread.run(Unknown Source)
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