Campaign: Fell under the map

In the campaign 2200, Jun 14 2028 // Brooklyn, United States Insomnia mission, when we pursuit the train and we collide with things that comes from what looks like a landslide and get out of the car, at the moment my character is suppose to land from thee car to thee ground, he just goes through it and then i die. I tried again but same thing so i'm stuck, can't go further in the campaign.