In additon to elisolution's response over, this also checks whether or not we are literally on the house webpage (not simply if the canonical was set or not). I analyzed this Alternative a little bit and so far as I can see, it really works as predicted. Otherwise, remember to allow https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html