Edit: could be an Xcode13 RC issue. MacOS Build on XCode13 RC fails complaining about `AttributeString` and `UNNotificationInterruptionLevel` not being found in scope. <img width="912" alt="Screen Shot 2021-09-14 at 1 52 43 PM" src="https://user-images.githubusercontent.com/380192/133332258-10bc276e-de10-496d-8860-db5761f4b5fb.png"> <img width="910" alt="Screen Shot 2021-09-14 at 1 52 36 PM" src="https://user-images.githubusercontent.com/380192/133332268-f3cea3c5-c84e-41d7-b015-2466365e04c4.png">