Error Code: NL-WEBSOCKET-CHANNEL-ENGINE Message: Error occurred while executing WebSocket channel.

not able to run script:
Below is the complete error exception:
Error Code: NL-WEBSOCKET-CHANNEL-ENGINE Message: Error occurred while executing WebSocket channel. Details: java.net.SocketTimeoutException: Connect Timeout at org.eclipse.jetty.io.ManagedSelector$ConnectTimeout.run(ManagedSelector.java:666) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
Please refer to the documentation for further details and advice