'Build input file cannot be found' Swift 4.2, Xcode 10.0

Question

I am getting the following error when building in Xcode 10.0 with swift 4.2:

Answer 1

Build input file cannot be found

How To fix This issue :

1. Go in the project-navigator, select your project

2. Select Build Phases tab

3. In Compile Sources section, check for the file(s) that Xcode is demanding of

4. Notice that the file(s) have the wrong path, and delete them by clicking on the minus icon

5. Re-add the file(s) by clicking the plus icon and search in the project.

6. Product > Clean Build Folder

7. Build