ERR_NGROK_SHIP_REGISTRY_CREDENTIAL_ALREADY_EXISTS: A credential for USERNAME at HOST already exists on this account: ID - ngrok documentation

What does ERR_NGROK_SHIP_REGISTRY_CREDENTIAL_ALREADY_EXISTS mean?

ngrok returns ERR_NGROK_SHIP_REGISTRY_CREDENTIAL_ALREADY_EXISTS with this message:

A credential for <USERNAME> at <HOST> already exists on this account: <ID>. Update it to rotate the password.

Where can I get more help with ERR_NGROK_SHIP_REGISTRY_CREDENTIAL_ALREADY_EXISTS?

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