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java.lang.NoClassDefFoundError: com.google.firebase.g	at com.google.firebase.b.a(Unknown Source)	at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)	at android.content.ContentProvider.attachInfo(ContentProvider.java:1058)	at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)	at android.app.ActivityThread.installProvider(ActivityThread.java:4560)	at android.app.ActivityThread.installContentProviders(ActivityThread.java:4190)	at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4132)	at android.app.ActivityThread.access$1300(ActivityThread.java:130)	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255)	at android.os.Handler.dispatchMessage(Handler.java:99)	at android.os.Looper.loop(Looper.java:137)	at android.app.ActivityThread.main(ActivityThread.java:4745)	at java.lang.reflect.Method.invokeNative(Native Method)	at java.lang.reflect.Method.invoke(Method.java:511)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)	at dalvik.system.NativeStart.main(Native Method)