same issues, Xcode 12.4. iOS14.5.1 or iOS15.0.1 An error occurred trying to capture Leaks data. Unable to invoke -[<DTLeaksService:0x123d3c180> requestLeaskForPid:context:provideBacktraces:- it does not respond to the selector]

is there no way to run iOS14.6 with xcode12.4 ? it`s have some problem such as udp broadcast with xcode12.5, have to send a permission to Apple

https://developer.apple.com/forums/thread/681037 but it not work for me