error: Unable to resolve build file: XCBCore.BuildFile

Question

error: Unable to resolve build file: XCBCore.BuildFile (missingTargetProductReference(\"3bf83096e50de72a94699e9afc1133ebe3512682230d04680075c283a974e273\")) (in targ         


        

Answer 1

The problem is that on new xcode 10.2 there is a new BUILD Configuration, you need to change to LEGACY.

You can check how to change it here: https://medium.com/xcblog/five-things-you-must-know-about-xcode-10-new-build-system-41676cd5fd6c . CHECK THE GIF

So if you have a newer version of xcode different than the one used when the project was working probably this is what is causing the issue.