Corona version 9
The model uses materials that may not be displayed correctly in very old versions of the engine.

Decorative Kew wall panel in three veneer options
Decorative panel in concrete material
Reference: https://leibal.com/architecture/kew-3/?utm_source=pinterest&utm_medium=social 

Attached objects textures and materials have logical names
Texturing UnwrapUVW

For Corona render it is recommended to install a version not lower than 1.5 since the glossiness of materials is configured with PBR in mind

Who works in a V-Ray version lower than 3.1 be careful there is a Microfaset GTR ( GGX) in the materials in the BRDF section if your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – which is preferable for you