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>.
Uneko orriak zerbitzu-langile bat izan beharko balu, <a>Kontsola</a> begira dezakezu erroreen bila edo zerbitzu-langilearen erregistroaren urratsak azter ditzakezu <span>Araztailea</span>n.