ERR_NGROK_7084: Received unexpected status code STATUSCODE while fetching metadata URL MDURL - ngrok documentation

What does ERR_NGROK_7084 mean?

ngrok returns ERR_NGROK_7084 with this message:

Received unexpected status code <STATUSCODE> while fetching metadata URL <MDURL>

Where can I get more help with ERR_NGROK_7084?

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