when you try to move an Android project from one computer to another, you encountered this problem. Since I have Android Studio 2.3 I don't have the option to run the standalone SDK-manager.
One effective solution that worked for me to resolve the problem is:
Go to Tools >> Android >> SDK-Manager >> SDK-Tools
Uncheck "Android SDK Platform-Tools" and press Apply to uninstall it again
Then check it again to re-install it. Then I was able to compile my project again