@YouTube What the hell? Mobile app is working fine, but website version all my favorites have disappeared and I cannot even search for anything as no results show yet I still get notices from ppl I'm subscribed to. Whatever you're messing with now isn't working. :/
We'd like to help. Have you tried clearing your browser's cache and cookies to check if that resolves the issue: https://goo.gl/wvxNwg ? Also, does this happen across browsers? Keep us posted.