Sims 4 - lights in house not working!

Hey everyone, I am so upset!! I’m in my favorite house I’ve ever remodeled/decorated and all of a sudden, the lights inside don’t work!! Everything is dark. They worked before and I’ve tried everything. This is all 3 floors too, ceiling lights, lamps, wall lights, none of them light up. I’ve gone on live mode and tried turning them on, I’ve adjusted brightness but it’s all the same, still completely dark. I’ve redrawn the rooms, adjusted the roof, I don’t know what else to do! I haven’t even been able to play in this house yet, I was working on it for 5 days and as soon as I get to finishing touches, this happens☹️ please help!! I don’t wanna start from scratch !!