“Welcome To The Frontier” Mission Glitch

It’s the second mission of the game. When I get to the part in the mission that says “defeat piker crew” nothing happens. I’ve watched videos of people doing the mission and all they do is open a door into a room full of enemies. When I open the door to that room it’s just empty. I’ve tried to do this mission about 20 times since Renegades dropped. Anyone know what I can do to get past this?