Incorrect canonical implementation: Make sure that the canonical URL is right and does not conflict with hreflang directives. Consider you've an e-commerce Web-site that’s available to end users in Canada in both English and French. You desire to make sure that search engines like google serve the right language Model https://addons.prestashop.com/fr/seo-referencement-naturel/30904-balises-hreflang-automatiques-et-balises-canoniques-seo.html