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I' trying out firebase for user authentication. I had followed the instruction under Android Studio Firebase but I'm getting this error -> 

Error:(53, 29) error: cannot access zzbti
class file for com.google.android.gms.internal.zzbti not found
KENdi
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Ilabamo Laundromat
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  • Possible duplicate of [Class file for com.google.android.gms.internal.zzaja not found](https://stackoverflow.com/questions/38073706/class-file-for-com-google-android-gms-internal-zzaja-not-found) – Alex Aug 17 '17 at 10:44

1 Answers1

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I stumbled upon the same error, checking the Firebase documentation I realised my dependencies in my build.gradle(Module.App) were not up-to-date, so I changed them so that they match the ones in this link https://firebase.google.com/docs/android/setup then I synced and the error disappeared.

glisu
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