ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_PRIMARY_REQUIRED: The 'endpoint_templates' list must include a template named 'primary' - ngrok documentation

What does ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_PRIMARY_REQUIRED mean?

ngrok returns ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_PRIMARY_REQUIRED with this message:

The 'endpoint_templates' list must include a template named 'primary'.

Where can I get more help with ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_PRIMARY_REQUIRED?

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