solved with this by terminal: rm -rf ~/Library/Developer/Xcode/DerivedData ~/Library/Developer/Xcode/Archives ~/Library/Developer/Xcode/iOS\ DeviceSupport ~/Library/Developer/Xcode/PrebuiltModulesCache ~/Library/Developer/Xcode/Logs ~/Library/Developer/CoreSimulator/Caches ~/Library/Developer/CoreSimulator/Devices ~/Library/Caches/org.swift.swiftpm ~/Library/org.swift.swiftpm ~/Library/Caches/com.apple.dt.Xcode

me too, also with beta 5, with beta 4 no problem

I hope someone will get fired after this good job. And they have the guts to reject app that steal too many resources from the iPhone. I am very disappointed