It’s not likely you’ll ever generate website page variations focusing on all languages and locations. In some cases, you’ll want to provide Google a sign of what do to when a given place or language isn’t accessible or doesn’t exist. An x-default tag will be the URL that Google displays.  https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html