ERR_NGROK_SHIP_GITHUB_UNAVAILABLE: GitHub did not answer a request for repository REPO (HTTP STATUS) - ngrok documentation

What does ERR_NGROK_SHIP_GITHUB_UNAVAILABLE mean?

ngrok returns ERR_NGROK_SHIP_GITHUB_UNAVAILABLE with this message:

GitHub did not answer a request for repository <REPO> (HTTP <STATUS>).

Where can I get more help with ERR_NGROK_SHIP_GITHUB_UNAVAILABLE?

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