r&#34;, [None])[0]
    if error is not None:
        return self.failure_handler(
            FailureArgs(
                request=request,
                reason=error,
                suggested_status_code=200,
                settings=self.settings,
                default=self.default_callback_options,
            )
        )

    # state parameter verification
    if self.settings.state_validation_enabled is True:
        state = request.query.get(&#34;state&#34;, [None])[0]
        if not self.setting