java.lang.AssertionError: Start offset must be before the end offset. startOffset = 280, endOffset = -1
        at org.netbeans.spi.editor.highlighting.support.OffsetsBag.addHighlightImpl(OffsetsBag.java:491)
        at org.netbeans.spi.editor.highlighting.support.OffsetsBag.addHighlight(OffsetsBag.java:161)
        at org.netbeans.modules.editor.bracesmatching.MasterMatcher.placeHighlights(MasterMatcher.java:289)
        at org.netbeans.modules.editor.bracesmatching.MasterMatcher.highlightAreas(MasterMatcher.java:269)
        at org.netbeans.modules.editor.bracesmatching.MasterMatcher.access$400(MasterMatcher.java:63)
        at org.netbeans.modules.editor.bracesmatching.MasterMatcher$Result$1.run(MasterMatcher.java:583)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1362)
        at org.netbeans.modules.editor.bracesmatching.MasterMatcher$Result._run(MasterMatcher.java:579)
        at org.netbeans.modules.editor.bracesmatching.MasterMatcher$Result.run(MasterMatcher.java:487)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)