Xcode 10, Command CodeSign failed with a nonzero exit code

Question

Everytime I build console is showing this message.

CodeSign /Users/admin/Desktop/AppStoreBuild/Project201/build/Debug-iphonesimulator/Project.app (in

Answer 1

I, too, saw this error after adding a mixture of .jpg and .png images to the art.scnassets folder, making code changes, and removing those changes via Xcode's Source Control > Discard All Changes... menu.

I tried the other fixes in this thread but, ultimately, I had to delete the added .jpg/.png files, clean the project, and rebuild the project to eliminate the errors. I then readded the original .jpg/.png files and I'm now rebuilding the code without issue.