Double steal situation. Adames got into a rundown, trying to give time to Contreras to score from third. They threw to third to get Contreras and third baseman bobbled the ball.
Poor handling by the Giants. Two outs and two strikes, so the catcher has to be cautious even if he can "get" Adames. Then throwing behind Contreras was another poor decision, with the bobble being third of their problems.