No licenses error when launching games from SteamRIP

I've been trying to download Dave The Diver and Raft from SteamRIP, but no matter what I do, I get an error saying "No licenses" when I try to run them. I've tried downloading different .dll files from Goldberg, changing the launch options, adding a steam_appid.txt file, using Lutris, and everything else people have suggested on older threads, but nothing has worked. If there's anything else I can try, please let me know!