JS chat example fail on client connection: HTTP Authentication failed

I'm testing the service using the chat example and it doesn't work for me.

Following the documentation or downloading the JavaScript chat example from https://github.com/Azure/azure-webpubsub/tree/main/samples/javascript/chatapp, always find an "HTTP Authentication failed; no valid credentials available" when the client try to open a websocket connection with the token url.


WIth the Live Trace Tool, I found the following message that doesn't help so much


And the ngrok always has a 401 error on eventhandler


I also checked the token at jwt.ms and It's seemed good


any help?

Start with the documentation and samples/javascript/chatapp, then reproduce the WebSocket connection using the token URL. Compare the client error with the Live Trace Tool output and the ngrok 401 response; the issue is complete when the authentication failure is explained and the chat example connects successfully.

Written by the indexing model from the issue text.