I have the same issue. I've finished the download and when I tried to open the file using 7zip I am unable to do that and file I downloaded is just a single file, not like a compressed folder that normally needs to be opened, I'm really confused on what I should do or how to tackle this issue. This happens to me when i try manually modding certain games like Bethesda games or like Cyberpunk. If someone could help that would be very appreciated.