ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_NAME_DUPLICATED: Endpoint template name NAME is used more than once - ngrok documentation

What does ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_NAME_DUPLICATED mean?

ngrok returns ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_NAME_DUPLICATED with this message:

Endpoint template name <NAME> is used more than once.

Where can I get more help with ERR_NGROK_SHIP_ENDPOINT_TEMPLATE_NAME_DUPLICATED?

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