Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Jive Software Open Source by Gaston Dombiak, 1 year ago
via JIRA by Gaston Dombiak, 1 year ago
via JIRA by Gaston Dombiak, 1 year ago
via by Ivo Bek, 2 years ago
via Jive Software Open Source by Daryl Herzmann, 1 year ago
java.lang.NullPointerException: 	at java.util.concurrent.ConcurrentHashMap.hash(Unknown Source)	at java.util.concurrent.ConcurrentHashMap.get(Unknown Source)	at org.jivesoftware.messenger.SessionManager$SessionMap.sortSession(	at org.jivesoftware.messenger.SessionManager$SessionMap.addSession(	at org.jivesoftware.messenger.SessionManager.addSession(	at org.jivesoftware.messenger.ClientSession.setAuthToken(	at org.jivesoftware.messenger.handler.IQAuthHandler.login(	at org.jivesoftware.messenger.handler.IQAuthHandler.handleIQ(	at org.jivesoftware.messenger.handler.IQHandler.process(	at org.jivesoftware.messenger.IQRouter.handle(	at org.jivesoftware.messenger.IQRouter.route(	at org.jivesoftware.messenger.PacketRouter.route(	at	at