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

Cobble Coffee Table Set
https://manner-matter.ru/works/stoli/zhurnalniy-stol-cobble 

4 veneer finishing options
4 sizes:
XS 400*440*250 mm
S 585*540*310 mm
M 770*700*370 mm
L 1000*950*430 mm

The objects are unified 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 in the materials in the BRDF section there is a Microfaset GTR ( GGX) 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