Regions define in the info file but not declare into the page.html.twig file

Problem/Motivation

Regions define in the info file but it is not declare in the page.html.twig and page--front.html.twig file.
Because of that when enable any block in that region not visible in the page. Only 'Navigation' region value is show.

Proposed Solution

Complete the page.html.twig and page--front.html.twig file with all define regions.