It’s unlikely you’ll ever produce webpage versions targeting all languages and areas. Occasionally, you’ll need to present Google a sign of what do to every time a specified spot or language isn’t out there or doesn’t exist. An x-default tag will be the URL that Google shows.  Mila is usually https://addons.prestashop.com/de/seo-suchmaschinenranking-optimization/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html