Hi,

my jenkins server stops working with below error.

Any clue ?


-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Jul 19, 2017 12:41:40 PM 
hudson.init.impl.InstallUncaughtExceptionHandler$DefaultUncaughtExceptionHandler
 
uncaughtException
SEVERE: A thread (AWT-EventQueue-0/3021) died unexpectedly due to an 
uncaught exception, this may leave your Jenkins in a bad way and is usually 
indicative of a bug in the code.
java.lang.ClassCastException: sun.java2d.HeadlessGraphicsEnvironment cannot 
be cast to sun.awt.Win32GraphicsEnvironment
        at sun.awt.windows.WToolkit$5.run(WToolkit.java:771)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:745)
        at java.awt.EventQueue.access$300(EventQueue.java:103)
        at java.awt.EventQueue$3.run(EventQueue.java:706)
        at java.awt.EventQueue$3.run(EventQueue.java:704)
        at java.security.AccessController.doPrivileged(Native Method)
        at 
java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:715)
        at 
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
        at 
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
        at 
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
        at 
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
        at 
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


Regards,
LnT

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