You are able to force to add "http" or "https" before the canonical URL (to prevent copy in between the http and https Variation of an internet site). Ex: if you choose to power https with the canonical URL, the canonical URL from the web site are going to be https://addons.prestashop.com/pt/seo-referenciamento-natural/31857-rich-snippets-automaticos-json-ld-opengraph-seo.html