<ul><li>Replaced <code>//cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js</code> with local <code>/platform/assets/plugins/datatables/jquery.dataTables.min.js</code> in foot.php</li><li>CDN was unreachable (ERR_CONNECTION_RESET), causing all DataTables plugins to cascade-fail and blocking the page loader spinner</li><li>Local version 1.10.9 satisfies all plugin requirements (1.10.0+)</li></ul>