ERR_NGROK_SHIP_CHECK_PATH_BAD_START: Health check NAME path PATH must start with '/' - ngrok documentation

What does ERR_NGROK_SHIP_CHECK_PATH_BAD_START mean?

ngrok returns ERR_NGROK_SHIP_CHECK_PATH_BAD_START with this message:

Health check <NAME> path <PATH> must start with '/'.

Where can I get more help with ERR_NGROK_SHIP_CHECK_PATH_BAD_START?

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