Why is there no lights in the parking lot. Unsafe at night.

I'm not 100% certain why the parking lights are out in this parking lot, but I have seen this happen elsewhere in other parking lots. It's usually due to a maintenance related issue or problem. Management is most likely aware of the problem, and usually has problem(s) addressed within a day or two. Concerning your safety: If you can, park differently than you normally do (closer to the lights of the actual store buildings themselves), keep your car keys in hand until you are safely inside, and carry/use a small, but bright, flashlight to illuminate where you are walking.

I also additionally recommend calling the management of the mall to let them know your concerm