Do not use GUIMaze.add() use GUIMaze .getContentPane().add() instead

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  • Stack trace

    • java.lang.Error: Do not use GUIMaze.add() use GUIMaze .getContentPane().add() instead at javax.swing.JFrame.createRootPaneException( at javax.swing.JFrame.addImpl( at java.awt.Container.add( at GUIMaze.<init>( at MazeDriver.main(

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