Area lights Global illumination problem

Unity Engine
1

HI,
i have imported model in .fbx exported from sketchup but when i try to build the global illumination with area lights it looks like this. I’ve tried to follow this tutorial

yet something is obviously wrong. Can somebbody help?

2

Bez tytu u hosted at ImgBB — ImgBB link to screenshot

3

Select model in project files and check Generate Lightmap UV option before bake.