java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:922)
at org.apache.catalina.session.ManagerBase.remove(ManagerBase.java:915)
at org.apache.catalina.session.StandardSession.expire(StandardSession.java:847)
at org.apache.catalina.session.StandardSession.expire(StandardSession.java:769)
at org.apache.catalina.session.StandardSession.expire(StandardSession.java:757)
at org.apache.catalina.session.StandardSession.setMaxInactiveInterval(StandardSession.java:587)
at org.apache.catalina.session.ManagerBase.createSession(ManagerBase.java:762)
at org.apache.catalina.session.StandardManager.createSession(StandardManager.java:311)
at org.apache.catalina.connector.Request.doGetSession(Request.java:2899)
at org.apache.catalina.connector.Request.getSession(Request.java:2561)
at org.glassfish.admingui.common.security.AdminConsoleAuthModule.validateRequest(AdminConsoleAuthModule.java:169)
at com.sun.web.security.RealmAdapter.validate(RealmAdapter.java:1311)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:551)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:623)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:96)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at java.lang.Thread.run(Thread.java:662)

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