org.jivesoftware.openfire.XMPPServer - Exception during module shutdown
java.lang.NullPointerException
at org.jivesoftware.openfire.pubsub.PubSubEngine.shutdown(PubSubEngine.java:1743)
at org.jivesoftware.openfire.pep.PEPServiceManager.stop(PEPServiceManager.java:208)
at org.jivesoftware.openfire.pep.IQPEPHandler.stop(IQPEPHandler.java:202)
at org.jivesoftware.openfire.XMPPServer.shutdownServer(XMPPServer.java:979)
at org.jivesoftware.openfire.XMPPServer.access$800(XMPPServer.java:148)
at org.jivesoftware.openfire.XMPPServer$ShutdownHookThread.run(XMPPServer.java:925)