Could not determine generated file paths for CoreData code generation

Question

While building my project for different target I am getting this error:

Could not determine generated file paths for Core Data code generation: Er

Answer 1

In my case in File Selector Code Generation was Selected as Swift. As I selected Code generation language as Objective-C. Error Disappeared.

After selecting Objective-C

Product > Clean

and then Rebuild the project.

This worked for me.