You can force to include "http" or "https" ahead of the canonical URL (to stop duplicate in between the http and https version of a website). Ex: if you decide on to force https with the canonical URL, the canonical URL of your site is going to be En muchas https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html