Walls become very weird after having built the lights

My walls (static meshes), initially white, have a very strange rendering after having built the light. I set the lighting resolution to 128. How to solve this?

Hi!

Looks like bad uv mapping for the lightmap…
Could you show the lightmap uvs for those meshes please?

1 Like

Hi! Indeed, I just found out that was the bad choice of index lighting UV that caused this. I changed from index 0 to index 1. But, seriously, why does the index 0 exist ?