You may pressure to incorporate "http" or "https" ahead of the canonical URL (in order to avoid copy concerning the http and https Model of an internet site). Ex: if you select to force https for your canonical URL, the canonical URL of the web page are going to be https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/31857-automatyczne-google-rich-snippets-json-ld-opengraph-seo.html