If you insert hreflang tags, guarantee all of them stage to indexable and crawlable pages. Check which tags are causing the issues and rectify them by making sure the pages they’re pointing to are Stay.  En muchas ocasiones, en las tiendas online se generan URLs que expresan filtros y códigos https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html