java.lang.StringIndexOutOfBoundsException: String index out of range: 456
   at java.lang.AbstractStringBuilder.substring(AbstractStringBuilder.java:870)
   at java.lang.StringBuilder.substring(StringBuilder.java:72)
   at java.lang.AbstractStringBuilder.subSequence(AbstractStringBuilder.java:849)
   at java.lang.StringBuilder.subSequence(StringBuilder.java:72)
   at org.netbeans.modules.html.parser.ElementsFactory$CommonAttribute.value(ElementsFactory.java:975)
   at org.netbeans.modules.html.editor.gsf.HtmlElementHandle.computeAttributesHash(HtmlElementHandle.java:88)
   at org.netbeans.modules.html.editor.gsf.HtmlElementHandle.<init>(HtmlElementHandle.java:81)
   at org.netbeans.modules.html.editor.gsf.HtmlStructureItem$2.run(HtmlStructureItem.java:205)
   at org.netbeans.modules.html.editor.gsf.HtmlStructureItem$1.run(HtmlStructureItem.java:184)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:584)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:150)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:134)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:198)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:206)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:102)
   at org.netbeans.modules.html.editor.gsf.HtmlStructureItem.runTask(HtmlStructureItem.java:164)
   at org.netbeans.modules.html.editor.gsf.HtmlStructureItem.getNestedItems(HtmlStructureItem.java:196)
   at org.netbeans.modules.csl.navigation.ElementNode.updateRecursively(ElementNode.java:310)
   at org.netbeans.modules.csl.navigation.ElementNode.updateRecursively(ElementNode.java:324)
   at org.netbeans.modules.csl.navigation.ElementNode.updateRecursively(ElementNode.java:324)
   at org.netbeans.modules.csl.navigation.ElementNode.updateRecursively(ElementNode.java:324)
   at org.netbeans.modules.csl.navigation.ElementNode.updateRecursively(ElementNode.java:281)
   at org.netbeans.modules.csl.navigation.ClassMemberPanelUI$5.run(ClassMemberPanelUI.java:288)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2036)