Mine

java.lang.Exception: Failed to set display mode.
Unable to enter fullscreen, continuing in windowed mode
	at org.lwjgl.util.Display.setDisplayMode(Display.java:243)
	at TWindow.setDisplayMode(TWindow.java:94)
	at TWindow.startRendering(TWindow.java:58)
	at Game.<init>(Game.java:19)
	at Game.main(Game.java:11)
Exception in thread "main" java.lang.NullPointerException
	at Game.frameRendering(Game.java:36)
	at TWindow.gameLoop(TWindow.java:123)
	at TWindow.startRendering(TWindow.java:84)
	at Game.<init>(Game.java:19)
	at Game.main(Game.java:11)