It may be a particular module or plugin producing the error. I'd personally advise re-installing the Prestashop core files if you haven’t already. three. It can redirect to the world wide web Services page having the listing of available Web Services and the configuration form to configure the assistance. To https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html