In additon to elisolution's answer earlier mentioned, this also checks no matter if we are literally on the home webpage (not just whether or not the canonical was set or not). I analyzed this Remedy a little and so far as I am able to see, it really works as expected. https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/31857-automatyczne-google-rich-snippets-json-ld-opengraph-seo.html