ERR_NGROK_7052: Invalid edge module, OAuth provider PROVIDER email domains must not contain empty values - ngrok documentation

What does ERR_NGROK_7052 mean?

ngrok returns ERR_NGROK_7052 with this message:

Invalid edge module, OAuth provider <PROVIDER> email domains must not contain empty values

Where can I get more help with ERR_NGROK_7052?

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