while running ionic build android iam getting error You may not have the required environment or OS to build this project

I'm developping an angularjs/ionic mobile application.

While running 'ionic build android' on CLI, I'm getting this error:

ERROR building one of the platforms:
Error: C:\Users\Username\FirstProject\platforms\android\cordova\build.bat:
Command failed with exit code 2
You may not have the required environment or OS to build this project

I updated my android SDK Tools to 24.3.3 but I'm getting the same error.

via Chebli Mohamed