ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_VALUE_REQUIRED: Credential value NAME must not be empty - ngrok documentation

What does ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_VALUE_REQUIRED mean?

ngrok returns ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_VALUE_REQUIRED with this message:

Credential value <NAME> must not be empty.

Where can I get more help with ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_VALUE_REQUIRED?

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