Facebook Login is current unavailable for this app in flutter

I am facing this error while doing Facebook authentication. Facebook Login is currently unavailable for this app. Below error is shown: Feature Unavailable: Facebook Login is currently unavailable

Features unavailable: Facebook Login is Currently unavailable for

How to fix Feature Unavailable: Facebook Login is

Fix feature unavailable facebook login is currently unavailable

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The developers of this app have not set up this app properly for

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Fix Feature Unavailable Facebook login is currently unavailable