Remove excess light

When checking a character in the marketplace, they sent me this error.

“The lighting under the hat still looks odd. It looks as if theres a light bulb
under the hat, shining lighting around the characters head.”

how to fix? I don’t see it in the scene when I load it on my computer( There are two skins-1 with a hat, 2 with a scarf. Verifiers have comments on 1 skin. The skeleton and animations are the same.)