When working with schema markup, it is always highly recommended to validate your schema code ahead of including it to your website. I often suggest validating the code using the Rich Results Test for Google-supported rich outcomes and schema kinds. It includes references on the Schema.org and Google documentation for https://www.presta-addons-modules.com/en/front-office/prestashop-addthis-integration-share-content-on-social-networks.html