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

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java.lang.NullPointerException:
at com.sun.enterprise.ee.web.sessmgmt.JxtaReplicationSender.putPipeWrapper(JxtaReplicationSender.java:885)
at com.sun.enterprise.ee.web.sessmgmt.JxtaReplicationSender.sendReplicationStateHC(JxtaReplicationSender.java:483)
at com.sun.enterprise.ee.web.sessmgmt.ReplicationHealthChecker.doTransmit(ReplicationHealthChecker.java:454)
at com.sun.enterprise.ee.web.sessmgmt.ReplicationHealthChecker.doPipeTest(ReplicationHealthChecker.java:432)
at com.sun.enterprise.ee.web.sessmgmt.JxtaBiDiPipeWrapper.areCurrentPipesOk(JxtaBiDiPipeWrapper.java:1512)
at com.sun.enterprise.ee.web.sessmgmt.JxtaBiDiPipeWrapper.testStartupAndReshapeIfNecessary(JxtaBiDiPipeWrapper.java:256)
at com.sun.enterprise.ee.web.sessmgmt.JxtaBiDiPipeWrapper.start(JxtaBiDiPipeWrapper.java:223)
at com.sun.enterprise.ee.web.sessmgmt.JxtaReplicationReceiver.doPipeInitialization(JxtaReplicationReceiver.java:338)
at com.sun.ejb.ee.sfsb.initialization.ReplicatedStrategyBuilder.initializePersistenceStrategy(ReplicatedStrategyBuilder.java:131)
at com.sun.ejb.containers.builder.StatefulContainerBuilder.buildStoreManager(StatefulContainerBuilder.java:179)
at com.sun.ejb.containers.builder.StatefulContainerBuilder.buildComponents(StatefulContainerBuilder.java:140)
at com.sun.ejb.containers.builder.BaseContainerBuilder.buildContainer(BaseContainerBuilder.java:100)
at com.sun.enterprise.server.AbstractLoader.loadEjbs(AbstractLoader.java:527)
at com.sun.enterprise.server.ApplicationLoader.doLoad(ApplicationLoader.java:191)
at com.sun.enterprise.server.TomcatApplicationLoader.doLoad(TomcatApplicationLoader.java:126)
at com.sun.enterprise.server.ExtendedApplicationLoader.doLoad(ExtendedApplicationLoader.java:134)
at com.sun.enterprise.server.AbstractLoader.load(AbstractLoader.java:238)
at com.sun.enterprise.server.AbstractManager.load(AbstractManager.java:226)
at com.sun.enterprise.server.ApplicationLifecycle.onStartup(ApplicationLifecycle.java:224)
at com.sun.enterprise.server.ApplicationServer.onStartup(ApplicationServer.java:446)
at com.sun.enterprise.server.ondemand.OnDemandServer.onStartup(OnDemandServer.java:134)
at com.sun.enterprise.server.PEMain.run(PEMain.java:409)
at com.sun.enterprise.server.PEMain.main(PEMain.java:336)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.enterprise.server.PELaunch.main(PELaunch.java:415)

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