Android Studio TransformException : Error:Execution failed for task ':app:transformClassesWithDexForDebug'

Question

I am getting the exception below when I am trying to run the application using Android Studio:

Error:Execution failed for task \':app:transformClasses

Answer 1

At my case change buildToolsVersion from "24" to "23.0.2", solve the problem. This will solve the problem especially if you're using old Android Studio less than version 2.