What is this thing?

Hello everyone!

Recently bought an archmodels pack from evermotion (this one: https://evermotion.org/shop/show_product/archmodels-vol-228/16093).

I’m impporting the fbx as I usually do with these packs, but this one looks really bad

Can anyone explain to me what’s happening?

Thank you and stay safe!!

SOLVED!

They kindly wrote me. It’s a normals issue. Solved setting normals from faces.

Thank you all