During the filming of the third and final installment to the Maze Runner trilogy, the series’ star, Dylan O’Brien, faced serious injuries that stalled production for almost a year. The actor was hit by a stunt car while shooting an action set piece and rushed to the hospital for a concussion, a facial fracture and brain trauma. According to the actor, he “broke most of the right side” of his face.
Article source: https://www.cinemablend.com/news/2557047/dylan-obrien-opens-up-about-how-his-severe-maze-runner-accident-affected-him