If you're looking at the building where your character says something about not being able to get in, off to the right are a bunch of guys guarding a back way in. There's a turret cannon there and a force field. The force field is being projected by the two columns on each side of the field. Mind trick the two guys on the other side of the field then throw your saber at either column and it'll go bye bye. Jump in while the dudes are still tricked and off em. Jump in the hole.