ERR_NGROK_SHIP_APP_NAME_ALREADY_EXISTS: An app named "NAME" already exists on this account - ngrok documentation

What does ERR_NGROK_SHIP_APP_NAME_ALREADY_EXISTS mean?

ngrok returns ERR_NGROK_SHIP_APP_NAME_ALREADY_EXISTS with this message:

An app named "<NAME>" already exists on this account.

Where can I get more help with ERR_NGROK_SHIP_APP_NAME_ALREADY_EXISTS?

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