ERR_NGROK_SHIP_APP_REPOSITORY_CONNECTION_UNAVAILABLE: The ngrok GitHub app is STATE for this repository - ngrok documentation

What does ERR_NGROK_SHIP_APP_REPOSITORY_CONNECTION_UNAVAILABLE mean?

ngrok returns ERR_NGROK_SHIP_APP_REPOSITORY_CONNECTION_UNAVAILABLE with this message:

The ngrok GitHub app is <STATE> for this repository. Reinstall or reactivate it on GitHub.

Where can I get more help with ERR_NGROK_SHIP_APP_REPOSITORY_CONNECTION_UNAVAILABLE?

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