Google service version conflict

When I use these two plugins in ionic 1

cordova-plugin-fcm

cordova-plugin-googleplus

then this type of error occurs:

BUILD FAILED in 1s
11 actionable tasks: 1 executed, 10 up-to-date
Error: /home/idiosys/ionic/seeCheckFolder/SeeCheck/platforms/android/gradlew: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.

What went wrong:

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.

What can be the reason for these errors?