ERR_NGROK_5536: Encountered an error while fetching user data: PROVIDER did not provide a user ID for your account - ngrok documentation

What does ERR_NGROK_5536 mean?

ngrok returns ERR_NGROK_5536 with this message:

Encountered an error while fetching user data: <PROVIDER> did not provide a user ID for your account.

Where can I get more help with ERR_NGROK_5536?

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