UV Overlap Error

I’m using Blender as a modeling tool for UE4 and it usually works fine , except with this model UE4 keeps giving me UV overlap errors.
UV One:

Lightmap:

I’ve tried readjust the margins of the lightmap, but it still gives me the error. Please help and thank you in advance!

Hi!

You need resize your UVs. Because some vertices is outside of the UV region.