Lighting with 2 walls behaving oddly.

I made a flashlight for my player, but when I look at where 2 different walls are connected, one wall lights up normally while the other remains dark. It is like the whole light needs to be on the wall for it to be lit up.
Any ideas how to fix this?

Can you narrow the problem down to just that one light? Is it set to important or auto? Please show us a screenshot of the lighting window and the light source inspector.

It was set to auto. I set it to important and now works perfectly! Thank you!