I use example of application from https://developers.refinitiv.com/en/article-catalog/article/creating-websocket-mrn-story-viewer-using-net-core-and-wpf article. I cloned repository (https://github.com/Refinitiv-API-Samples/Example.WebSocketAPI.CSharp.MRNWebSocketViewer) and trying to run application. As far as I understand WebSocket connection is established and login request is accepted by RTDS server. But after that status event is received and connection is closed.
"MRN_STORY Status:: data state:Suspect stream state:Closed code:SourceUnknown status text:A18: Unknown service."
Could you please advise what can be wrong?