" GTM no-script code not found: possibly missing or not in " I consider to include the script from the header.tpl but there's no section. Update: Issue was solved. I just use A further addon and customize hook to do it. Thanks Ali Edited November 21, 2018 by QNP (see https://directmysocial.com/story2317559/not-known-factual-statements-about-prestashop-canonical-url