Hi @chris0147
Review this article: https://blog.cpanel.com/announcing-cpanel-whms-official-lets-encrypt-with-autossl-plugin/
AutoSSL is developed by cPanel and having a quick look at their article the command you are using is coming from there. As a future reference if you are following instructions then sharing the link helps community members isolate and investigate.
I don’t know if Benny Vasquez from cPanel is on the LetsEncrypt forums (she may be) however she seems to be owning the development for AutoSSL
I would suggest that you follow this up on the cPANEL forum as it is a cPanel client and initiative.
A possible explanation is below HOWEVER as I am not a cPanel Expert
Andrei