Strange Texture Brightness?

So I recently made a castle-esque structure using UE4 geometry. I converted everything to static meshes and changed the lightmap coordinate index to 1 just like everyone has said to do to get rid of wrapping and overlapping UV errors. So I’ve gotten to texturing it and everything. But there is this weird part of the mesh that isnt affected by lighting. Here are some pictures of what I mean. How would I fix this?


Hi,

It is probably due to the fact that your mesh is too complicated to be handled by an Auto Generated Lightmap. Most likely, you need to set up your own lightmap in an external 3D editor, then reimport the mesh.

That would make sense. I was just a bit confused since the mesh was actually created using UE4 so I figured it should have worked fine.