Can't upvote or downvote, neither local server or fediverse - eviltoast

I’m not sure if !Main is the correct place, but I couldn’t find any support or question community for sh.itjust.works. Something that could be created and linked in the FAQ?

Well back to the issue: I can’t upvote or downvote any posts. Not even my own I think, as I tried to downvote a created post on !test. This is both in a web browser and through the Voyager app. In the app I get a message: Problem voting. Please try again.

Anyone who has any ideas what is causing this?