I don't know whether it is a bug or not. The title was labelled as 'bug' because I believe it is the closest possible option. I do apology if staff already aware about the problem. The problem occurs randomly. Sometimes I could check the likes and at the other times failed. Here is what could be done to reproduce the error: Open any profile Click the 'likes' received in left tab. Sometimes it work as expected and at another times it failed to work. I clearly understand this is not quite important things. I write it here just to give an overview of what was happen when someone check 'likes' in profile.
Interesting, I just checked yours and got that error page you mention. Then I refreshed the page and your likes showed up. Sounds like a bug to me.
I was thinking it only happen on me but thanks for confirm it. At first I think it only happen on specific profiles but then I realize it happen on any profiles. Refreshing the pages will make it work nicely again.
Let me know if it's still happening... I didn't change anything, but I did restart PHP-FPM on the servers... which would mean it might have been a corrupt op-cache for one PHP file on one server (which is why refreshing would fix it since you don't always hit the same server).