Luke Heasley

I have played the game for 8 hours and have run into a glitch. The glitch is where I have to save someone from an elavator but if there are enemies nearby I cant open it. It is glitched so that no matter what I do I cant open the elevator, as there are apparently enemies nearby when I know there aren't. The zombies keep running into the door like there's something there, when from what I can see there is nothing. I cant figure why it's glitched or how to fix it, so im either going to have to restart the entire story again or stop playing.