# File lib/omniauth/strategies/facebook.rb, line 65
      def callback_phase
        with_authorization_code! do
          super
        end
      rescue NoAuthorizationCodeError => e
        fail!(:no_authorization_code, e)
      rescue OmniAuth::Facebook::SignedRequest::UnknownSignatureAlgorithmError => e
        fail!(:unknown_signature_algorithm, e)
      end