Solved Art folder

I came around a weird 'bugg'. When I only have my map mod in my mod folder, I have missing textures (of custom buildings, the normal buildings work fine). When I put THE SAME ART FOLDER, that is in my mods folder, in my levels folder in the map with the same level name (user/documents/BeamNG/levels/Sloped_City (name of map)) the textures apear again.
Anyone knows how to fix it?

 

Are you sure you wrote the paths correctly (Mod folder instead of map folder)?

 

Yes
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Update: it worked without the level folder by a friend

 

I copied the exact same art folder that is in the mod folder. It worked by a friend of my