ERR_NGROK_604: A description is limited to MAX characters; you have entered VAL characters - ngrok documentation

What does ERR_NGROK_604 mean?

ngrok returns ERR_NGROK_604 with this message:

A description is limited to <MAX> characters; you have entered <VAL> characters.

Where can I get more help with ERR_NGROK_604?

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