Google Sign In not working when built in my Android Studio
A third-party has developed the main structure for my app, including a Google Sign In. When they test it, it works. When I run the APK that they built, it works. When I build using the project files, it fails with a
I've reinstalled Android Studio, installed all the possible SDKs, but to no avail. Does anybody have any idea why one project will build successfully on one computer, but not on mine?