If the current page should have a service worker, you could look for errors in the <a>Console</a> or step through your service worker registration in the <span>Debugger</span>.
Se a páxina actual debería ter un traballador de servizo, pode buscar erros na <a>Consola</a> ou pasar o rexistro do traballador do servizo no <span>Debugger</span>.