Not able to connect web client with error net::ERR_TUNNEL_CONNECTION_FAILED

The error "net::ERR_TUNNEL_CONNECTION_FAILED" in a web browser usually means there's an issue with the network connection while attempting to create a tunnel to a WebSocket server.

Occasionally, the firewall settings of your network or your antivirus software may obstruct WebSocket connections. Consider temporarily disabling these security measures to check if the problem is resolved.