Whenever you include hreflang tags, assure all of them level to indexable and crawlable pages. Check out which tags are causing the issues and rectify them by ensuring that the pages they’re pointing to are live.  Al enviar este formulario, acepto que PrestaShop S.A utilice los datos que he facilitado https://bookmarkalexa.com/story4278577/automatic-hreflang-tags-canonical-tags-all-pages-seo-can-be-fun-for-anyone