Can't start activity!!

[Sagar0-0]

[Sagar0-0]

java.lang.RuntimeException: Unable to start activity ComponentInfo{android.example.com.squawker/android.example.com.squawker.MainActivity}: java.lang.IllegalStateException: Default FirebaseApp is not initialized in this process android.example.com.squawker. Make sure to call FirebaseApp.initializeApp(Context) first.

[Sagar0-0]

Already tried adding -> FirebaseApp.initializeApp(Context) , in main activity, but still getting same exception.