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Using Accesstoken To Retrieve Firebase User Causing Firebase Error With Facebook Auth: "unsuccessful Debug_token Response From Facebook" Code 190

Setting up Facebook Authentication with Firebase on Android and getting the following pesky error: com.google.firebase.FirebaseException: An internal error has occurred. [ Unsucce

Solution 1:

I ended up fixing my this issue by:

(drum roll please)

Deleting my Facebook Application through the Facebook Developer's Console and creating a new, identical application. I then copied the app id and secret to Firebase Console auth for Facebook signin, updated my manifest, and voila, it worked.

I'm not marking this solution as the "right" answer because it didn't "fix the problem." I was just going off the intuition that this was a FirebaseException (an internal error) after I had already double-triple-quadruple checked all of my Facebook app's configuration settings and code.

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