Weird Import Issue from Blender

Ok so I got this issue where I imported an object from blender to unreal and there’s this weird shadow thingy. I’m fairly new to the whole game development thing but I’m slowly learning. I got an error with the smoothing or something in the log and I fixed it by exporting the fbx with faces and not “only normals”. That fixed one problem but then I had another problem of where I have an issue with my skeleton I made for it. In the log it talked about my model not having the appropriate weights or something with the skeleton and the mesh and to use the T-pose…I think. And I do have some with appropriate weights but I also have some of the mesh that don’t because then it bends weird when I turn the head or something instead of keeping its shape and just rotating. It’s really weird. Any ideas?