title: Failures: No manifest was fetched. with Nuxt/pwa module 2.6.0
body: <p>currently using "@nuxtjs/pwa": "2.6.0" having the issue manifest not registering on lighthouse analysis, service worker also taking time.
  specific lighthouse error Failures: No manifest was fetched.</p>
  
  <p><a href="https://i.stack.imgur.com/sqDj8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sqDj8.png" alt="enter image description here"></a></p>
  
  <p>I can help with code also if needed!!</p>
  
  <p>My nuxt.config.js</p>
  
  <pre><code> build: {
      publicPath: cdn.com
   },
   modules: [
      '@nuxtjs/axios',
      '@nuxtjs/pwa'
   ],
   manifest: {
      name: 'name',
      description: "Desc",
      theme_color: '#607D8B',
      short_name: 'shortname'
   },
  </code></pre>
  
  <p>Using Docker deployer. upload the content of .nuxt/dist/client directory to your CDN (<a href="https://nuxtjs.org/api/configuration-build#publicpath" rel="nofollow noreferrer">PublicPath Docs Nuxt</a>)</p>