Nova Garon glitch

On Nova Garon I was in the final part of the facility, chasing Bode, and I got to the TIE Fighter room. Merrin was trying to help me in combat but I needed to get over to her, so I tried to jump where the TIE Fighters were and fell. I thought It would just put me back up there like games normally do, but it sent me back to where the Mantis was. All the doors were closed and I had no way to get back to the mission. I tried turning off the console, restarting it, and a lot of other things. None of it worked. I can’t do the last of the Nova Garon mission.