This mentions Unreal Engine but the problem is in Blender.
I'm creating a small hallway and exported it as fbx to use it in Unreal Engine 4. I followed this tutorial for baking and exporting.
In the image above, if you look closely, the left side of the point light (identified with the lamp icon) appears basically dark on the wall while at the right side has actual light. You can tell the lighting is incorrect by the light reflection on the floor.
I know this is a problem with the normal map in blender because if I delete the normal map in Unreal the issue dissapears and, sadly, I'm left with a relatively cheap version on the wall material.
I've searched everywhere for this and couldn't find anyone with this issue. Any help is appreciated. I've been hitting my head for days.
I have a backup collection with the original mesh and unbaked textures and another with the mesh with the baked textures, I Also inverted the green channel in the baked normal map.