java.lang.NullPointerException
	at org.graalvm.visualvm.heapviewer.ui.TreeTableView.isColumnVisible(TreeTableView.java:287)
	at org.graalvm.visualvm.heapviewer.truffle.ui.TruffleObjectsView.setAggregation(TruffleObjectsView.java:334)
	at org.graalvm.visualvm.heapviewer.truffle.ui.TruffleObjectsView.configureObjectsBySize(TruffleObjectsView.java:254)
	at org.graalvm.visualvm.heapviewer.truffle.ui.TruffleSummaryView$ObjectsSection$8.run(TruffleSummaryView.java:553)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)