Hi, I know about this issue. I already reported to Avast and they replied that they had fixed their problem in their antivirus. Unfortunately, it is not resolved.
Please, click "Report the file as a false positive". They should recheck it and maybe they will fix it faster.
This is the 1st time I am getting this error. I have updated via the program numerous times but never had this warning. Hope you can help. Picture below: