title: Angular 6 ServiceWorker - index.html returned response 404 Not Found
body: <p>I've deployed PWA on my test server <a href="https://wwww.mytestserver.me/dev/pwa/" rel="nofollow noreferrer">https://wwww.mytestserver.me/dev/pwa/</a> under 'dev/pwa' folder. The app passed Lighthouse with 100% PWA score. But the app still doesn't work as it's expected. It just doesn't work at all. )) JS console says:</p>
  
  <blockquote>
    <p>Failed to load ‘<a href="https://wwww.mytestserver.me/dev/pwa" rel="nofollow noreferrer">https://wwww.mytestserver.me/dev/pwa</a>’. A ServiceWorker
    passed a promise to FetchEvent.respondWith() that rejected with
    ‘Error: Response not Ok (fetchAndCacheOnce): request for
    <a href="https://wwww.mytestserver.me/index.html" rel="nofollow noreferrer">https://wwww.mytestserver.me/index.html</a> returned response 404 Not
    Found’ - ngsw-worker.js:589:31</p>
  </blockquote>
  
  <p>In my manifest.json I have:   "scope": "/" and "start_url": "/". I tried to set them to <a href="https://wwww.mytestserver.me/dev/pwa/" rel="nofollow noreferrer">https://wwww.mytestserver.me/dev/pwa/</a> and to just /dev/pwa/ but result is the same.</p>