Static lighting, by any chance?
possibly. If so, how would I fix this? There is a point light next to it if that is what you mean by static lighting.
In major games the walls in rooms blend seamlessly. I’ve seen many people say they put trim in between the seams to hide it but I have seen many games where that is not true. I am using 3*1 walls and connecting them to make a hallway, Yet, there are black seams between the walls. The textures are repeating, so there should be no seams and repeats perfectly. I have even had them all as one solid color and there will still be seams. Do I have to make the hallway in blender and import it? I’ve been avoiding this since I feel there would be light map issues.
Okay. Thank you so much!
What I mean is, your directional light ( and point light ), are they static, stationary or movable?
If they are not movable, easiest solution is to make them so 
Issue. The bubble from the attenuation radius does not allow then player to leave the radius and creates an invisible wall.