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

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java.lang.NullPointerException:
at com.sun.jbi.management.system.AutoAdminTask.pollAutoDirectory(AutoAdminTask.java:1031)
at com.sun.jbi.management.system.AutoAdminTask.performAutoInstall(AutoAdminTask.java:329)
at com.sun.jbi.management.system.AutoAdminTask.performAutoFunctions(AutoAdminTask.java:288)
at com.sun.jbi.management.system.AdminService.heartBeat(AdminService.java:967)
at com.sun.jbi.management.system.AdminService.handleNotification(AdminService.java:198)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor$ListenerWrapper.handleNotification(DefaultMBeanServerInterceptor.java:1732)
at javax.management.NotificationBroadcasterSupport.handleNotification(NotificationBroadcasterSupport.java:257)
at javax.management.NotificationBroadcasterSupport$SendNotifJob.run(NotificationBroadcasterSupport.java:322)
at javax.management.NotificationBroadcasterSupport$1.execute(NotificationBroadcasterSupport.java:307)
at javax.management.NotificationBroadcasterSupport.sendNotification(NotificationBroadcasterSupport.java:229)
at javax.management.timer.Timer.sendNotification(Timer.java:1237)
at javax.management.timer.Timer.notifyAlarmClock(Timer.java:1206)
at javax.management.timer.TimerAlarmClock.run(Timer.java:1289)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)

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