I have been trying to update an app of which the code base hasn't changed in two years. It still builds fine and runs fine, on simulator and device, but... when uploading it to Testflight I get the error "The app contains one or more corrupted binaries. Rebuild the app and resubmit.". I have been rebuilding like a maniac, trying to look at what could be wrong with the binary, I let ChatGPT misguide me on the log files, I think I have tried everything... but to no avail. Any ideas how I could find out what goes wrong?

This code crashes ("Unexpectedly found nil while unwrapping an Optional value") import Combine class Receiver { &#9;&#9;var value: Int! &#9;&#9;var cancellables = Set<AnyCancellable>([]) &#9;&#9;init(_ p: AnyPublisher<Int,Never>) { &#9;&#9;&#9;&#9;p.assign(to: \.value, on: self).store(in: &cancellables) &#9;&#9;} } let receiver = Receiver(Just(5).eraseToAnyPublisher()) It does not crash if I use p.sink { self.value = $0 }.store(in: &cancellables) instead of the assign, and it does not crash if I do not use an optional for the value-property. To me this looks like a bug in Swift's constructor code, but maybe I am overlooking something?