originally reported by DimeCadmium on the forums:

Compatibility meter seems to be broken, every user says 0% (but still shows common artists), glancing at console shows a 404 for https://api.listenbrainz.org/1/user/DimeCadmium/similar-to/…, with the result being

{"code":404,"error":"Similar-to user not found"}

Edit: nope, not for every user. Some users work, but f.e. Jonahrf1999, JVines, sammy8806 don’t work for me