In additon to elisolution's answer earlier mentioned, this also checks irrespective of whether we are actually on the home page (not just whether the canonical was established or not). I tested this solution a tad and in terms of I am able to see, it really works as expected. Usually, please https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html