error: Unable to resolve build file: XCBCore.BuildFile (missingTargetProductReference(\"3bf83096e50de72a94699e9afc1133ebe3512682230d04680075c283a974e273\")) (in targ
In my case, it was a simple issue of a missing file.
Checked all secondary error messages. Error report said that my bridging-header.h file was not being found. Checked the path of the missing file from the target settings (just search for .h to get the right setting key). Fixed the new path and error went away.
The cause: I had reorganized my folders after a system crash and added a second level to my project location.