ERR_NGROK_SHIP_CHECK_PORT_OUT_OF_RANGE: Health check NAME port must be 1 to 65535, or 0 for the default - ngrok documentation

What does ERR_NGROK_SHIP_CHECK_PORT_OUT_OF_RANGE mean?

ngrok returns ERR_NGROK_SHIP_CHECK_PORT_OUT_OF_RANGE with this message:

Health check <NAME> port must be 1 to 65535, or 0 for the default. Got <PORT>.

Where can I get more help with ERR_NGROK_SHIP_CHECK_PORT_OUT_OF_RANGE?

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