The following Swift code always throws fatal runtime error:

private let imageLoaderQueue = DispatchQueue(label: "com.google.days-until-birthday")

Xcode version: 5.13 (15E204a)
iOS: 17.4.1

I checked different examples of how to use DispatchQueue and all of them just using this or similar code, but for some reasons it always fails when I try to do the same: “Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value”.