FCM AND google map Execution failed for task ':processDebugGoogleServices

Before Add google map plugin my app was working fine but after I install google map plugin it always
Execution failed for task ‘:processDebugGoogleServices’.

Please fix the version conflict either by updating the version of the google-services plugin (information about the latest version is available at https://bintray.com/android/android-tools/com.google.gms.google-services/) or updating the version of com.google.android.gms to 9.0.0

I tried every things but still same issue please help me