Incorrect canonical implementation: Make sure the canonical URL is proper and will not conflict with hreflang directives. You can use the Hreglang Tag to Permit the search engines know you have many variations of the same website page in numerous languages. The sitemap can also be a reference place for https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/30904--hreflang-seo.html