ERR_NGROK_434: Either a certificate or a certificate management policy may be specified, not both - ngrok documentation

What does ERR_NGROK_434 mean?

ngrok returns ERR_NGROK_434 with this message:

Either a certificate or a certificate management policy may be specified, not both

Where can I get more help with ERR_NGROK_434?

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