Failed to Upgrade WebSocket error

What product/components do you use and which version/fix level?

10.11 Microservice

Are you using a free trial or a product with a customer license?

customer license

What are trying to achieve? Please describe in detail.

I am getting this error message, when i try to invoke pub.client:websocket service with nsName on the webSocket client service and the client service pointed to the webSocket server simulator, the ports are up and allowed but still i’m getting this, does anyone know why?

2022-07-26 09:50:53 ICT [ISP.0090.0003C] (tid=1062) == ERROR WEBSOCKET LISTENER ==
org.eclipse.jetty.websocket.api.UpgradeException: Failed to upgrade to websocket: Unexpected HTTP Response Status Code: 500 Server Error
	at org.eclipse.jetty.websocket.client.WebSocketUpgradeRequest.onComplete(WebSocketUpgradeRequest.java:537)
	at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:218)
	at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:210)
	at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:481)
	at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:461)
	at org.eclipse.jetty.client.HttpReceiver.responseSuccess(HttpReceiver.java:424)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.messageComplete(HttpReceiverOverHTTP.java:374)
	at org.eclipse.jetty.http.HttpParser.handleContentMessage(HttpParser.java:597)
	at org.eclipse.jetty.http.HttpParser.parseContent(HttpParser.java:1722)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1551)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.parse(HttpReceiverOverHTTP.java:208)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:148)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:80)
	at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:131)
	at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:172)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
	at java.base/java.lang.Thread.run(Thread.java:829)
 
2022-07-26 09:51:03 ICT [ISS.0161.0014E] (tid=317) Unable to make WebSocket connection to URI : ws://localhost:8080/ 
2022-07-26 09:51:03 ICT [ISS.0161.9998E] (tid=317) Exception -> java.lang.Exception: Unable to make connection to uri : ws://localhost:8080/ 
2022-07-26 10:00:53 ICT [ISP.0090.0003C] (tid=1098) == ERROR WEBSOCKET LISTENER ==
org.eclipse.jetty.websocket.api.UpgradeException: Failed to upgrade to websocket: Unexpected HTTP Response Status Code: 500 Server Error
	at org.eclipse.jetty.websocket.client.WebSocketUpgradeRequest.onComplete(WebSocketUpgradeRequest.java:537)
	at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:218)
	at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:210)
	at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:481)
	at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:461)
	at org.eclipse.jetty.client.HttpReceiver.responseSuccess(HttpReceiver.java:424)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.messageComplete(HttpReceiverOverHTTP.java:374)
	at org.eclipse.jetty.http.HttpParser.handleContentMessage(HttpParser.java:597)
	at org.eclipse.jetty.http.HttpParser.parseContent(HttpParser.java:1722)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1551)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.parse(HttpReceiverOverHTTP.java:208)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:148)
	at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:80)
	at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:131)
	at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:172)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
	at java.base/java.lang.Thread.run(Thread.java:829)
 
2022-07-26 10:01:03 ICT [ISS.0161.0014E] (tid=317) Unable to make WebSocket connection to URI : ws://localhost:8080/ 
2022-07-26 10:01:03 ICT [ISS.0161.9998E] (tid=317) Exception -> java.lang.Exception: Unable to make connection to uri : ws://localhost:8080/