I am stuck at 34 votes on MathOverflow. Some previous answers like this Meta Stack Exchange post say that this is because the 40 votes should be 30 for answers, 10 for questions. But, it seems different in my case as I get the error popup whether I'm voting on answers or on questions. So I can't get closer to 40 votes by just voting on questions.
Both screenshots are from within a window of 1 or 2 minutes.