java.lang.IllegalArgumentException

null source

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  • Stack trace

    • java.lang.IllegalArgumentException: null source at java.util.EventObject.<init>(EventObject.java:34) at java.awt.AWTEvent.<init>(AWTEvent.java:225) at java.awt.event.ComponentEvent.<init>(ComponentEvent.java:94) at java.awt.event.WindowEvent.<init>(WindowEvent.java:175) at java.awt.event.WindowEvent.<init>(WindowEvent.java:212) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:518) at java.awt.Component.dispatchEventImpl(Component.java:3396) at java.awt.Container.dispatchEventImpl(Container.java:1437) at java.awt.Window.dispatchEventImpl(Window.java:1566) at java.awt.Component.dispatchEvent(Component.java:3367) at java.awt.EventQueue.dispatchEvent(EventQueue.java:445) at java.awt.SequencedEvent.dispatch(SequencedEvent.java:105) at java.awt.EventQueue.dispatchEvent(EventQueue.java:443) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:190) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:144) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:130) at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)

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