Moodle for mobile

problem with adding FCM(GCM) to android project---Airnotifier

 
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problem with adding FCM(GCM) to android project---Airnotifier
 

Hello,

I'm trying to set Firebase (the GCM for api 26 and higher) for using airnotifier and i've encountered this error in android studio:

[string/google_app_id] /home/.../platforms/android/res/values/strings.xml    [string/google_app_id] /home/.../platforms/android/build/generated/res/google-services/debug/values/values.xml: Error: Duplicate resources

any idea please?

 
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