'filenames are used to distinguish private declarations of the same name' error

Question

I am getting this error on generating an NSManagedObject in Xcode 8.1 in Swift.

:0: error: filename \"DemoOne+CoreDataClass.swift\" used twice: \'/Us

Answer 1

This is what I did to fix this issue,

1. Select your entity in the data model
2. Set the Module to Current Product Module
3. Leave the Codegen to Class Definition though Manual/None also works
4. Select Editor > Create NSManagedObject Subclass