java.lang.NullPointerException
   at org.netbeans.modules.netserver.websocket.WebSocketHandlerClient7.readHandshake(WebSocketHandlerClient7.java:176)
   at org.netbeans.modules.netserver.websocket.WebSocketHandlerClient7.read(WebSocketHandlerClient7.java:133)
   at org.netbeans.modules.netserver.websocket.WebSocketClientImpl$WebSocketClientHandler.read(WebSocketClientImpl.java:163)
   at org.netbeans.modules.netserver.SocketFramework.readData(SocketFramework.java:179)
   at org.netbeans.modules.netserver.SocketFramework.process(SocketFramework.java:153)
   at org.netbeans.modules.netserver.SocketClient.process(SocketClient.java:108)
   at org.netbeans.modules.netserver.SocketFramework.doRun(SocketFramework.java:137)
   at org.netbeans.modules.netserver.SocketFramework.run(SocketFramework.java:79)
   at org.netbeans.modules.netserver.SocketClient.run(SocketClient.java:75)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.netserver.api.WebSocketClient.start(WebSocketClient.java:68)
   at org.netbeans.modules.cordova.platforms.MobileDebugTransport.attach(MobileDebugTransport.java:79)
   at org.netbeans.modules.cordova.platforms.android.AndroidDebugTransport.attach(AndroidDebugTransport.java:87)
   at org.netbeans.modules.cordova.CordovaPerformer.startDebugging(CordovaPerformer.java:225)
   at org.netbeans.modules.cordova.platforms.android.AndroidActionProvider$1.run(AndroidActionProvider.java:149)
   at org.netbeans.modules.progress.ui.RunOffEDTImpl$1.run(RunOffEDTImpl.java:150)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2048)