It wasn't working with iOS 14.6 - I did look at those error messages and it said something along the lines of "could not import symbol files. This can happen when you're using a newer version of iOS than Xcode supports." Hence this post. However, I don't remember the exact text of the error, and it seems to be working with iOS 14.7.1 (crazy that in 6 days we've had two updates). Anyway, I guess this is resolved now.