– Tobias Schwarz Commented Jan 26 at eleven:53 Now I know that both equally my schema and yours are appropriate as the URL will come from localhost; That is why Google shows an mistake. I've included a remark for anybody who might confront exactly the same difficulty Down the road. Thanks https://addons-prestashop91009.blog-a-story.com/12387200/json-schema-custom-message-secrets