ERR_NGROK_SHIP_APP_ENVIRONMENTS_REQUIRED: The 'environments' list must include at least one environment - ngrok documentation

What does ERR_NGROK_SHIP_APP_ENVIRONMENTS_REQUIRED mean?

ngrok returns ERR_NGROK_SHIP_APP_ENVIRONMENTS_REQUIRED with this message:

The 'environments' list must include at least one environment.

Where can I get more help with ERR_NGROK_SHIP_APP_ENVIRONMENTS_REQUIRED?

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