Dynamic/movable meshes appear black in packaged game

I have dynamic meshes that look fine with Play-in-Editor, but are rendered as black once I package the game. I thought Volumetric Lightmaps are supposed to solve this. I’ve attached screenshots below (both taken in-editor, so the one that shows the error is not entirely accurate – they’re completely black when I package the project). Any thoughts?

It can be the light source, try to add a light source un front of one of the objects, build the light and re-pack the game,