JTS triangulation failed, returning empty list
Exception in thread "Timer-0" java.lang.RuntimeException: java.lang.NullPointerException
	at jogamp.common.awt.AWTEDTExecutor.invoke(AWTEDTExecutor.java:58)
	at jogamp.opengl.awt.AWTThreadingPlugin.invokeOnOpenGLThread(AWTThreadingPlugin.java:103)
	at jogamp.opengl.ThreadingImpl.invokeOnOpenGLThread(ThreadingImpl.java:206)
	at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:172)
	at javax.media.opengl.Threading.invoke(Threading.java:191)
	at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:405)
	at com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:74)
	at com.jogamp.opengl.util.AnimatorBase.display(AnimatorBase.java:142)
	at com.jogamp.opengl.util.FPSAnimator$1.run(FPSAnimator.java:128)
	at java.util.TimerThread.mainLoop(Timer.java:534)
	at java.util.TimerThread.run(Timer.java:484)
Caused by: java.lang.NullPointerException
	at org.osm2world.core.target.jogl.JOGLTarget.renderPart(Unknown Source)
	at org.osm2world.core.target.jogl.JOGLTarget.render(Unknown Source)
	at org.osm2world.viewer.view.debug.DebugView.renderTo(Unknown Source)
	at org.osm2world.viewer.view.ViewerGLCanvas$ViewerGLEventListener.display(Unknown Source)
	at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:189)
	at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:177)
	at javax.media.opengl.awt.GLCanvas$6.run(GLCanvas.java:849)
	at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:425)
	at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:364)
	at javax.media.opengl.awt.GLCanvas$8.run(GLCanvas.java:864)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:216)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:670)
	at java.awt.EventQueue.access$400(EventQueue.java:96)
	at java.awt.EventQueue$2.run(EventQueue.java:631)
	at java.awt.EventQueue$2.run(EventQueue.java:629)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:640)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)