Xcode 13.1, I'm not sure if anyone had met this weird behavior. But for me, my Xcode shows duplicate warning or error message to me from some time I'm not sure. It is really annoying.

CodePudding user response：

This is a known bug in Xcode 13.1 that has been fixed in 13.2(.1)

CodePudding user response：

Update Xcode 13.1 to 13.2.1 to avoid these internal issues