java.lang.ClassCastException: org.netbeans.spi.debugger.DebuggerEngineProvider$ContextAware cannot be cast to org.netbeans.modules.web.javascript.debugger.DebuggerEngineProviderImpl
   at org.netbeans.modules.web.javascript.debugger.browser.NetBeansJavaScriptDebuggerFactoryImpl.stopDebuggingSession(NetBeansJavaScriptDebuggerFactoryImpl.java:76)
   at org.netbeans.modules.extbrowser.plugins.ExternalBrowserPlugin$BrowserTabDescriptor.deinitialize(ExternalBrowserPlugin.java:699)
   at org.netbeans.modules.extbrowser.plugins.ExternalBrowserPlugin$BrowserTabDescriptor.access$400(ExternalBrowserPlugin.java:578)
   at org.netbeans.modules.extbrowser.plugins.ExternalBrowserPlugin$BrowserPluginHandler.handleClose(ExternalBrowserPlugin.java:360)
   at org.netbeans.modules.extbrowser.plugins.ExternalBrowserPlugin$BrowserPluginHandler.read(ExternalBrowserPlugin.java:246)
   at org.netbeans.modules.netserver.websocket.WebSocketHandler7.readDelegate(WebSocketHandler7.java:118)
   at org.netbeans.modules.netserver.websocket.AbstractWSHandler7.readData(AbstractWSHandler7.java:301)
   at org.netbeans.modules.netserver.websocket.AbstractWSHandler7.readFinalFrame(AbstractWSHandler7.java:244)
   at org.netbeans.modules.netserver.websocket.AbstractWSHandler7.read(AbstractWSHandler7.java:126)
   at org.netbeans.modules.netserver.websocket.WebSocketServer$WebSocketHandler.read(WebSocketServer.java:206)
   at org.netbeans.modules.netserver.SocketFramework.readData(SocketFramework.java:175)
   at org.netbeans.modules.netserver.SocketFramework.process(SocketFramework.java:149)
   at org.netbeans.modules.netserver.SocketServer.process(SocketServer.java:106)
   at org.netbeans.modules.netserver.SocketFramework.doRun(SocketFramework.java:136)
   at org.netbeans.modules.netserver.SocketServer.run(SocketServer.java:77)
   at java.lang.Thread.run(Thread.java:722)