PushNotifications build error class file for com.google.android.gms.common.zze not found

[toineKeistoer]

Hi there, when I'm trying to build my android project I get the following error msg:

build/Android/Debug/app/src/main/java/com/foreign/Fuse/PushNotifications/AndroidImpl.java:55: error: cannot access zze
        int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(activity);
                                               ^
  class file for com.google.android.gms.common.zze not found

:app:compileDebugJavaWithJavac FAILED

I added the following projects to the unoproj file:

1. Firebase.unoproj
2. Firebase.Database.unoproj
3. Firebase.Notifications.Android.unoproj

My Android SDK settings are:

"SDK": {
            "BuildToolsVersion": "28.0.2",
            "CompileVersion": 26,
            "MinVersion": 19,
            "TargetVersion": 26
        }

Any idea what I'm doing wrong?