I frequently get an error that reads “Error submitting vote.” It doesn’t say if the vote is on a post or comment, and to me it looks like all my votes are still there.
I’m thinking it’s issues on Lemmy.world’s end. I have an account there and was seeing that so switched to an account I have on another instance and everything appears to be working without issue. They’ve been having to cope with a huge influx of new users so I’m sure it’s related to issues caused by that.