I had no problem building and running. But I have noticed this week that sometimes by default a project intended for iOS 15 Beta and/or Xcode 13.0 Beta may by default open in Xcode 12.5 and I'll get all types of errors until i realize that i'm in the wrong version of Xcode. Now I generally right-click on project files and specific 'open with Xcode-beta'. Are you sure you're opening it up with the correct version?

Well, it suddenly occurred to me that I am using my iPhone (11 Pro Max, no LIDAR) rather than my iPad (12.9 Pro, 4th gen, LIDAR) to record the video. I recorded this time with the iPad, and the black screen issue is gone; I will continue to test to make sure the rest works.

So this is another major 'duh' - I'd downloaded Xcode beta 13 last Monday and, as I said, the sample app was running fine. Somehow later in the week when I started using right-click 'open with Xcode-beta' it was opening the sample with Xcode beta 12.5 and I didn't realize it - but that's why I was getting all of the errors. I've deleted Xcode release and the 12.5 beta, and now i'm opening with xcode beta 13 and all is well again.

Okay, I think I've figured out that I shouldn't need to because the file will be generated automatically with the required values added based on code statements, but I'm still not sure why I wouldn't need to add a string explaining why, e.g., Privacy - Location services is being used.