“Cannot connect to 127.0.0.1” at sign screen

I got Esign, and downloaded an app from it, but when I sign it, the terminal shows… says "Signing Completed", but the pop up says Cannot connect to 127.0.0.1. I already have a DNS downloaded from the Esign web

EDIT: Figured out if I went to settings – > IPA Install Server – > selected one of the backups, it worked