During the 2017 Oscar's ceremony, presenters Faye Dunaway and Warren Beatty took the stage to present the "Best Picture" nominees. When Beatty opened the envelope to announce the winner, he saw "Emma Stone, La La Land," which was the card announcing her award for "Best Actress" in the film, minutes earlier. Once the error was recognized, it was revealed that Moonlight had actually won the award in that category. La La Land producer Jordan Horowitz…