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java.awt.HeadlessException: null	at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:207)	at java.awt.Window.(Window.java:535)	at java.awt.Frame.(Frame.java:420)	at java.awt.Frame.(Frame.java:385)	at javax.swing.JFrame.(JFrame.java:174)	at com.exe4j.runtime.util.InternalErrorFrame.(InternalErrorFrame.java:24)	at com.exe4j.runtime.LauncherEngine$1.run(LauncherEngine.java:112)	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$3.run(EventQueue.java:704)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.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)