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sun.java2d.HeadlessGraphicsEnvironment cannot be cast to sun.awt.Win32GraphicsEnvironment
java.lang.ClassCastException: sun.java2d.HeadlessGraphicsEnvironment cannot be cast to sun.awt.Win32GraphicsEnvironment	at sun.awt.windows.WToolkit$3.run(WToolkit.java:758)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)	at java.awt.EventQueue.access$000(EventQueue.java:101)	at java.awt.EventQueue$3.run(EventQueue.java:666)	at java.awt.EventQueue$3.run(EventQueue.java:664)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)