What about last.fm links on artist pages? Someone recently added this link and I can’t help but feel like it’s not right, and it seems like a malfunction on last.fm’s side rather than a real representation of an artist’s page on last.fm
Getting 502 Bad Gateway
Into the trash it goes 
refreshing a few times eventually worked for me, navigating last.fm in general seems to be buggy at the moment
edit: since the link’s been removed now, it was a link on Skrillex’s MB page leading to a last.fm page for a collaboration of Skrillex, Dylan Brady & Caroline Polachek - https://www.last.fm/music/Skrillex,+Dylan+Brady+&+Caroline+Polachek
same editor that added that link has added many similar links to artist pages