Not sure if this is a bug, but upvotes "randomly" error out?

Occasionally when I upvote a "front-page" post or sometimes even an individual comment it will redirect to an empty page that just says "error". (It's in the kbin CSS format, it's not, like, literally blank). However even after that other posts / comments will upvote without error.

I thought it was related to a login token or something, and logging out and back in seems to re-set but not completely fix the problem. It will recur at some point. Re-loading the page doesn't seem to help.

I'm using various OS setups but always through Firefox, fwiw, but as far as I know no plug-ins should be causing what seems like random errors.

Sorry if this isn't the right thread, I couldn't find "kbinsupport" or "askkbin".

#kbinMeta