ERR_NGROK_SHIP_DOMAIN_AUTOMATION_NOT_CONFIGURED: Automated DNS setup is not configured in this environment - ngrok documentation

What does ERR_NGROK_SHIP_DOMAIN_AUTOMATION_NOT_CONFIGURED mean?

ngrok returns ERR_NGROK_SHIP_DOMAIN_AUTOMATION_NOT_CONFIGURED with this message:

Automated DNS setup is not configured in this environment.

Where can I get more help with ERR_NGROK_SHIP_DOMAIN_AUTOMATION_NOT_CONFIGURED?

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