ERR_NGROK_1628: There were validation errors while saving the endpoint configuration:ERRS - ngrok documentation

What does ERR_NGROK_1628 mean?

ngrok returns ERR_NGROK_1628 with this message:

There were validation errors while saving the endpoint configuration:<ERRS>

Where can I get more help with ERR_NGROK_1628?

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