" GTM no-script code not found: both lacking or not in " I try to add the script inside the header.tpl but there is no segment. Update: Dilemma was solved. I just use A further addon and personalize hook to make it happen. Thanks Ali Edited November 21, 2018 by https://addons.prestashop.com/es/seo-posicionamiento-buscadores/30904-etiquetas-automaticas-hreflang-canonical-etiquetas-seo.html