Mopidy-youtube not working

I’m not really familiar with using linux but somehow I managed to get mopidy working on my server today. I also installed mopidy-youtube and in the config file it shows that it’s enabled but when I try to search for anything it doesn’t work. Youtube also doesn’t show under services in musicbox webclient, but I don’t know if it even should.

Have you the newest package of youtube api installed. Old version results exactly in this fault.

Well there wasn’t anything about installing it in the extension’s documentation so I don’t think I did it. How can I do that?

Did you follow the Readme here? It mentions installing youtube_dl, gstreamer1.0-plugins-bad and ytmusicapi.