java.lang.IllegalStateException: Lexer org.netbeans.modules.el.lexer.ELLexer@3e0817 returned null token but lexerInput.readLength()=1 lexer-state: org.netbeans.modules.el.lexer.ELState@451 tokenStartOffset=369, readOffset=370, lookaheadOffset=371 Chars: "+" - these characters need to be tokenized. Fix the lexer to not return null token in this state. at org.netbeans.lib.lexer.LexerInputOperation.checkLexerInputFinished(LexerInputOperation.java:434) at org.netbeans.lib.lexer.LexerInputOperation.nextToken(LexerInputOperation.java:198) at org.netbeans.lib.lexer.EmbeddedTokenList.initAllTokens(EmbeddedTokenList.java:161) at org.netbeans.lib.lexer.EmbeddingContainer.embeddedTokenList(EmbeddingContainer.java:214) at org.netbeans.api.lexer.TokenSequence.embeddedImpl(TokenSequence.java:358) at org.netbeans.api.lexer.TokenSequence.embedded(TokenSequence.java:306) at org.netbeans.modules.editor.lib2.highlighting.SyntaxHighlighting$HSImpl.moveTheSequence(SyntaxHighlighting.java:450) at org.netbeans.modules.editor.lib2.highlighting.SyntaxHighlighting$HSImpl.moveNext(SyntaxHighlighting.java:427) at org.netbeans.modules.editor.lib2.highlighting.DirectMergeContainer$Wrapper.fetchNextHighlight(DirectMergeContainer.java:442) at org.netbeans.modules.editor.lib2.highlighting.DirectMergeContainer$HlSequence.updateMergeVars(DirectMergeContainer.java:294) at org.netbeans.modules.editor.lib2.highlighting.DirectMergeContainer$HlSequence.nextMerge(DirectMergeContainer.java:266) at org.netbeans.modules.editor.lib2.highlighting.DirectMergeContainer$HlSequence.moveNext(DirectMergeContainer.java:213) at org.netbeans.modules.editor.lib2.highlighting.HighlightsReader.readUntil(HighlightsReader.java:77) at org.netbeans.modules.editor.lib2.view.HighlightsViewFactory.restart(HighlightsViewFactory.java:186) at org.netbeans.modules.editor.lib2.view.ViewBuilder$FactoryState.init(ViewBuilder.java:1327) at org.netbeans.modules.editor.lib2.view.ViewBuilder.createViews(ViewBuilder.java:723) at org.netbeans.modules.editor.lib2.view.ViewBuilder.createReplaceRepaintViews(ViewBuilder.java:684) at org.netbeans.modules.editor.lib2.view.ViewUpdates.updateViewsByModification(ViewUpdates.java:311) at org.netbeans.modules.editor.lib2.view.ViewUpdates.insertUpdate(ViewUpdates.java:247) at sun.reflect.GeneratedMethodAccessor57.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:457) at com.sun.proxy.$Proxy23.insertUpdate(Unknown Source) at org.netbeans.lib.editor.util.swing.PriorityDocumentListenerList.insertUpdate(PriorityDocumentListenerList.java:85) at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:202) at org.netbeans.editor.BaseDocument.fireInsertUpdate(BaseDocument.java:1616) at org.netbeans.editor.BaseDocument.handleInsertString(BaseDocument.java:821) at org.netbeans.editor.BaseDocument$FilterBypassImpl.insertString(BaseDocument.java:2480) at javax.swing.text.DocumentFilter.insertString(DocumentFilter.java:100) at org.openide.text.CloneableEditorSupport$DocFilter.insertString(CloneableEditorSupport.java:3090) at org.netbeans.editor.BaseDocument.insertString(BaseDocument.java:747) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.insertString(BaseKit.java:1263) at org.netbeans.modules.html.editor.api.HtmlKit$HtmlDefaultKeyTypedAction.insertString(HtmlKit.java:446) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.performTextInsertion(BaseKit.java:1329) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.access$100(BaseKit.java:1104) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction$2.run(BaseKit.java:1197) at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:347) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.actionPerformed(BaseKit.java:1173) at org.netbeans.editor.ext.ExtKit$ExtDefaultKeyTypedAction.actionPerformed(ExtKit.java:1022) at org.netbeans.modules.html.editor.api.HtmlKit$HtmlDefaultKeyTypedAction.actionPerformed(HtmlKit.java:427) at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:339) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1664) at javax.swing.JComponent.processKeyBinding(JComponent.java:2879) at javax.swing.JComponent.processKeyBindings(JComponent.java:2926) at javax.swing.JComponent.processKeyEvent(JComponent.java:2842) at java.awt.Component.processEvent(Component.java:6282) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4861) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1895) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:762) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1027) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:899) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:727) at java.awt.Component.dispatchEventImpl(Component.java:4731) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Window.dispatchEventImpl(Window.java:2719) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:729) at java.awt.EventQueue.access$200(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:688) at java.awt.EventQueue$3.run(EventQueue.java:686) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:702) at java.awt.EventQueue$4.run(EventQueue.java:700) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:699) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) [catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)