Helpful URLs are being set in the configuration web site of every product, group, or static material page. This generation website page is only valuable for many automatic webpages, and usually you will not have to worry about these. Most of the time, we advise not to the touch these https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html