Bug in Android Gradle, Could not list content

An Android project I am building using Android Studio is almost done. But all of a sudden I am getting Gradle build error. I have not changed any code or settings. Now I am stuck there for two days as I can not find any answer anywhere for the solution to this problem. So I found the Gradle.org.
I am hoping this post will be answered with a solution. I will appreciate any suggestions. Thank you!

Gradle build finishes with build exception error : Could not list content of directory. C:…app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\23.1.1\res\drawable-xxhdpi\abc_ic_menu_cut_mtrl_alpha.png

Suggests running with --stacktrace

But I am a novice at Gradle, So the trace does not help me to solve the problem.
Can anyone tell me what I need to do. Thanks