What's wrong with CoreData?

Question

iOS

Hello, friends!
What could be wrong? I have already tried everything I could find on the Internet, I don’t understand anything, the application crashes when I try to save something.

Added a module, now another error.

Answer 1

I gave you the answer in my previous question. Look at the examples there, if you don’t know English, then look at the pictures or just copy-paste the code