Unable to add classes to the ShooterGameLoadingScreen module

A licensee reported an issue of not being able to add a new class to the ShooterGameLoadingScreen module inside of Shooter Game. It tends to give more output errors when in a Source built editor rather than Binary.

I've attached my output log for convenience.

Regression?: NO
The issue occurs in 4.10.2

1. Create a project based off ShooterGame
2. Navigate to File > New C++ Class
3. Check the "Show All Classes" box
4. Select Object and hit Next
5. Select "Choose Folder" and then navigate to the project's directory > Source > ShooterGameLoadingScreen > Private and select that folder.
6. Select Create Class
   1. The project may fail to generate the project files, if so:
      1. Close the editor, right-click the project's .uproject file, and select Generate Visual Studio Project files
      2. Open the .sln file for the project once it finishes generating
      3. Compile the project (ctrl+shift+B or right-click the project's name in the Solution Explorer hit select Build)
         Result: The build fails
         Expected: The build should succeed