Lighting problems

Hey, i’ve recently come across a problem which i can’t find a solution for. I’ve been placing assets within my project for several months now, but today i started working on the lighting, the problem is when i build the lighting every single one of my meshes just go black, you can’t see any of the materials its just completely black. Does anyone know how to resolve this?

Thanks for your help


Create a 2nd uv channel + proper lightmap