OK, I looked into it. Here is what I found. I am not sure about this source, but it seems to be the consensus.
https://factcheck.afp.com/wisconsin-vote-surge-was-not-fraud
You have to remember that tRUMPf was actively dissuading his followers from using mail-in votes. So its only natural that the vast majority of those votes would be for the Democrat. Also, those mail-in votes and absentee ballots were required to be counted AFTER the live votes. That is something that you can fact check.
But ok, I should not have said fake charts. But it seems there is a logical explanation. One that makes a lot more sense than wide-spread cheating. But i understand if you are on the other side, it is worth being concerned. Just make sure to listen to both sides of the issue. I believe Wisconsin is 100% legit.