I have a problem with final render of the room because it is completely different from one in the viewpoint render. There is no HDRI lightning and HDRI background is white.
Thank you for your answers I really need your help.
Blender Stack Exchange is a question and answer site for people who use Blender to create 3D graphics, animations, or games. It only takes a minute to sign up.Sign up to join this community
If your HDRI isn't showing in your final render then you probably don't have it set up correctly in your World Shader (Shader Editor > Shader Type: World). This example is in Cycles, and the only lighting is one of Blender's included HDRI's (sunrise.exr) in the Environment Texture node:
An easy to miss cause of this (or similar) problem is to use the Image Texture node instead of the Environment Texture node for the HDRI file.