It may be a certain module or plugin resulting in the error. I'd personally counsel re-installing the Prestashop Main files if you haven’t already. Take into account integrating API keys instead authentication mechanism. API keys function special identifiers for purposes or users, making sure that only authorized get-togethers can access https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html