Apple developed Project files from Intro to App Development Lesson 16 on QuestionBot 2 are giving me errors as follows:The project will build and run fine. It will also answer the first question. However, asking a 2nd question causes an error of "Thread 1: signal SIGABRT". This is a file straight from the Apple Tutorial. Suggestions?Project files give warnings for depricated code are given as follows: "The use of Swift 3 @objc inference in Swift 4 mode is deprecated." Suggestions?Thanks,Mike