how do i fix shadows on my object?,how to I fix shadows on my object?

i’m getting some odd shadows on the surface of my object.
could it be the lightmap in ch2? I’ve tried several variations of the uvs, but still get these shadow errors.

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Duplicate Post: https://answers.unrealengine.com/questions/229382/how-do-i-fix-shadow-error-on-object.html