Auto SSL Wing Error

Hey guys, I have gone through most of the Auto SSL error threads and can't find anything similar to help solve this. As far as I can tell, we are not using cloudflare so this issue shouldn't happen when I try to register an SSL. An error occurred the last time AutoSSL ran, on June 27, 2021: DNS DCV: No local authority: "sub.domain.com"; HTTP DCV: The system queried for a temporary file at ", but the web server responded with the following error: 404 (Not Found). A DNS (Domain Name System) or web server misconfiguration may exist.