java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.util.Arrays.copyOfRange(Arrays.java:2694)
   at java.lang.String.<init>(String.java:203)
   at java.lang.String.substring(String.java:1913)
   at java.io.File.getParent(File.java:453)
   at java.io.File.getParentFile(File.java:473)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.getRoot(FileInfo.java:190)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:120)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:115)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.getFactory(BaseFileObj.java:622)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.getParent(BaseFileObj.java:588)
   at org.netbeans.modules.web.common.api.WebUtils.getRelativePath(WebUtils.java:323)
   at org.netbeans.modules.html.editor.hints.css.CreateRuleInStylesheet.<init>(CreateRuleInStylesheet.java:97)
   at org.netbeans.modules.html.editor.hints.css.MissingCssElement.createFixes(MissingCssElement.java:88)
   at org.netbeans.modules.html.editor.hints.css.MissingCssElement.<init>(MissingCssElement.java:64)
   at org.netbeans.modules.html.editor.hints.css.CssClassesVisitor.processElements(CssClassesVisitor.java:151)
   at org.netbeans.modules.html.editor.hints.css.CssClassesVisitor.visit(CssClassesVisitor.java:112)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:465)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.lib.api.elements.ElementUtils.visitChildren(ElementUtils.java:467)
   at org.netbeans.modules.html.editor.hints.css.MissingClassRule.run(MissingClassRule.java:95)
   at org.netbeans.modules.html.editor.hints.HtmlHintsProvider.computeErrors(HtmlHintsProvider.java:241)
   at org.netbeans.modules.html.editor.HtmlErrorFilter.filter(HtmlErrorFilter.java:99)
   at org.netbeans.modules.csl.core.ErrorFilterQuery.getFilteredErrors(ErrorFilterQuery.java:76)
   at org.netbeans.modules.csl.core.TLIndexerFactory$TLIndexer.index(TLIndexerFactory.java:248)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$3.run(Indexable.java:248)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:265)