Poster, logo and backdrop artwork finder stopped working

Hello. When we add a media to our library, it automatically finds logos, backdrop and poster. Also we can change them with the alternatives in the menu. Today that stopped working in my library. Whatever I add, it only sends a poster and a backdrop. No logo. Also doesn't show any alternatives. just says no image were found. How can I fix that?

Thanks!

See Art Picker Broken - #3 by tmm1