More logging

Author: Daltz333

source/_extensions/pwa_service_files/sw.js

@@ -17,7 +17,7 @@ self.addEventListener('install', function(e) {
 self.addEventListener('fetch', function(event) {
     event.respondWith(
         caches.match(event.request).then(function(response) {
-            return response || fetch(event.request);
+            return response || fetch(event.request).catch(error => console.error(error));
         })
     );
 });