ERR_NGROK_3010: Received an HTTP response with unknown status code CODE from a backend - ngrok documentation

What does ERR_NGROK_3010 mean?

ngrok returns ERR_NGROK_3010 with this message:

ngrok gateway error: Received an HTTP response with unknown status code <CODE> from a backend

Troubleshoot ERR_NGROK_3010 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Where can I get more help with ERR_NGROK_3010?

Email support@ngrok.com and include the error code.