elevator rises endlessly (Fallout 4)

Hello everyone. If anyone had it, help pzhlsta with a solution.
In a mission with a paladin (against synths), the last elevator goes up and down endlessly. Reboots, tried it alone and stuff. All three of us boot up together, listen to the music and see the light flickering. Before that, it was similar in the mission at the water treatment plant, but there was an exit through the stairs.