It could be a specific module or plugin creating the error. I would advise re-installing the Prestashop core files if you haven’t already. Below can be a non-exhaustive list of the possibilities offered by powering your modules and services with the PrestaShop CloudSync APIs: If you are a rookie like https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html