I can open my project on other pc but lightning doesn't work

Hi, me and my brother are working on the same project, its a bluprint-cpp project and i sent him these folders: Binaries,Config,Content,Saved(just config folder),Source, uproject and sln.

He can open the project and work on it, but lightning and physics doesn’t work as intended, when he opens up my level the directional lightning leaks, ignoring some meshes, and objects fall through and behave slightly different in physics, we have tried a lot of fixes so far but no luck.

We have another project shared very similar to this one and it works fine.