You can power to add "http" or "https" ahead of the canonical URL (in order to avoid replicate among the http and https Edition of an internet site). Ex: if you end up picking to drive https for your canonical URL, the canonical URL with the site will probably be https://addons.prestashop.com/nl/seo-zoekmachineoptimalisatie-vermelding/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html