A little background I am creating a complete architecture model of interior and exterior in 3ds Max which is then exported to FBX format in order to import in unity. The Unity is importing model fine however when I try to drag all the model in Hierarchy: Sample Scene in Unity it gives the error. Below is the error screenshot link for futher clarification:
https://ibb.co/P1NbhsT

Haziq said:

A little background I am creating a complete architecture model of interior and exterior in 3ds Max which is then exported to FBX format in order to import in unity. The Unity is importing model fine however when I try to drag all the model in Hierarchy: Sample Scene in Unity it gives the error. Below is the error screenshot link for futher clarification:
https://ibb.co/P1NbhsT

Open up a new empty project in Unity itself you can go to Edit → Preferences → GI Cache then Clean.

Thanks mate ? the clean Cache solve the problem.