Hi Brian,
When running SwiftUI, I get the 'only available in ios 13.0 or newer' error. Code works if I run it in a new project only using SwiftUI, but if I try merging SwiftUI code with other primarily UIKit code, it crashes- even after adding the 'available in ios 13.0' fixes above each class everywhere. I've checked stackoverflow but think you might have a simpler/smarter solution? Thanks for your time.