I have this problem with App Development with Swift. Stuck on module 1.8 because of code mis-matches.
With Xcode 11, you should avoid those types of assets for now. Canned resources typically lag behind when new tools are released.
If you want to work with them, best to note their creation date, supported tools/Swift, then scan the Xcode wiki for a compatible toolset, then hit 'more downloads' for that version Xcode and go to work.