ERR_NGROK_7034: Invalid edge module, custom OAuth scopes on a managed OAuth application are not allowed - ngrok documentation

What does ERR_NGROK_7034 mean?

ngrok returns ERR_NGROK_7034 with this message:

Invalid edge module, custom OAuth scopes on a managed OAuth application are not allowed.  Define a custom OAuth application to use custom scopes.

Where can I get more help with ERR_NGROK_7034?

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