My toon shader seems to make a black hole.

This is whats happening int to the model I'v attached this toon shader to. It seems to be creating this black hole of some sort and i can't figure out why and how to fix it. i would just like it to make my model with a toon shading and an outline. I imported it from a blender file with several different meshes. one mesh the body which is the only one native to that file works just fine it outlines the clothing no problem. but the other parts that I've imported to the blender file don't seam to be very susceptible to the toon shader. I wonder if this is has a part in this. if so how would I fix this. and ive already tried decreasing the outline width to no avail and i can't seam to get unity to smooth out my models as was recommended on something else. so I'm stumped on this one