Need Help For Light Bake Issue

Hi, I m new in UE ,
I learning light baking. I got an issue in my project. Can any one tell me what is the mistake i did there?

In above picture you can see the door is coming black, I tried with different light mass. Still same issue is coming.

This is UV0

This is UV1

UV in blender
How i fix this issue?
If there is no UV in model and if i create UV using blender is there anything i need to check for getting good result ? I using Smart UV Projection for unwrap UV. Is there any issue using that?

whats the main problem … is the texture not right ?