Here is what it looks like after around 5 hours.

Hi, I have the same symptoms: the app crashes immediately on all devices running iOS 14. I have tried everything recommended in this thread (disabling bitcode, adding libswift_Concurrency, adding "-Wl,-weak-lswift_Concurrency -Wl,-rpath,/usr/lib/swift" to "other linker flags"...) but it still crashes.

This issue seems to be fixed with iOS 15.1