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

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java.lang.NullPointerException:
at com.jivesoftware.plugin.jniwrapper.SystemIdleListener.setAvailableIfActive(SystemIdleListener.java:118)
at com.jivesoftware.plugin.jniwrapper.SystemIdleListener.access$200(SystemIdleListener.java:30)
at com.jivesoftware.plugin.jniwrapper.SystemIdleListener$1.run(SystemIdleListener.java:101)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)

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