javax.swing.text.BadLocationException: Invalid offset=1279 not within <0, 1278>
   at org.netbeans.editor.Utilities.checkOffsetValid(Utilities.java:1388)
   at org.netbeans.editor.Utilities.checkOffsetValid(Utilities.java:1383)
   at org.netbeans.editor.Utilities.getRowStart(Utilities.java:155)
   at org.netbeans.editor.Utilities.getRowStart(Utilities.java:138)
   at org.netbeans.editor.CodeFoldingSideBar.traverseForward(CodeFoldingSideBar.java:332)
   at org.netbeans.editor.CodeFoldingSideBar.getPaintInfo(CodeFoldingSideBar.java:299)
   at org.netbeans.editor.CodeFoldingSideBar.paintComponent(CodeFoldingSideBar.java:520)
   at javax.swing.JComponent.paint(JComponent.java:1029)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JViewport.paint(JViewport.java:747)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at org.netbeans.swing.tabcontrol.TabbedContainer.paint(TabbedContainer.java:956)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at org.netbeans.core.windows.view.ui.MultiSplitPane.paint(MultiSplitPane.java:325)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at org.netbeans.core.windows.view.ui.MultiSplitPane.paint(MultiSplitPane.java:325)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JLayeredPane.paint(JLayeredPane.java:567)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paint(JComponent.java:1038)
   at javax.swing.JLayeredPane.paint(JLayeredPane.java:567)
   at javax.swing.JComponent.paintChildren(JComponent.java:864)
   at javax.swing.JComponent.paintToOffscreen(JComponent.java:5131)
   at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1475)
   at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1406)
   at javax.swing.RepaintManager.paint(RepaintManager.java:1220)
   at javax.swing.JComponent.paint(JComponent.java:1015)
   at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21)
   at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60)
   at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97)
   at java.awt.Container.paint(Container.java:1780)
   at org.netbeans.core.windows.view.ui.MainWindow.paint(MainWindow.java:631)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:814)
   at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714)
   at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:694)
   at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:128)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)