I saw this app featured on a YouTube channel and thought it was pretty interesting, especially for GNOME users. However there is a rather weird thing about it: it claims to be using Piped for YouTube but it doesn’t get the “Sign in to confirm that you’re not a bot” error. I guess it uses a different API when Piped gives an error.
Random guess: Install flatseal and use it to give permissions to that folder.
You shouldn’t need to do that if portals are properly installed on your system which typically is just one or two package.
tell me more, because a similar thing happened with EOG which i fixed with flatseal but pipline wouldn’t find the files even when i granted it access to the whole file system