ProcessDebugResources'. > Error: More Than One Library With Package Name 'com.google.android.gms'

I added Firebase Cloud Messaging to my Android app and I'm upgrading my old app from GCM to FCM. I tried the sample app by following the steps in Firebase Console, which works fine

Solution 1:

Previously some modules in my app was using old jar files of googleplayservices.

After using google play services with same version like below

dependencies {
    compile 'com.google.android.gms:play-services:9.6.1'
}

I hope it will help some one needed.