Logo not appearing on splash screen of progressive web
<p>In these demos, there are logos on the splash screens.</p>

<p><a href="https://addyosmani.com/blog/getting-started-with-progressive-web-apps/" rel="nofollow">https://addyosmani.com/blog/getting-started-with-progressive-web-apps/</a></p>

<p>I don't know what I am doing wrong in my manifest - I have an icon but it is not showing up on my splash screen.</p>

<p>My manifest looks like this:</p>

<pre><code>{
  "short_name": "Weather Service",
  "name": "Weather Service",
  "icons": [
    {
      "src": "logo.png",
      "sizes": "144x144",
      "type": "image/png"
    }
  ],
  "start_url": "index.html",
  "display": "standalone",
    "orientation": "portrait",
 "background_color": "#FAFAFA",
  "theme_color": "#512DA8"
}
</code></pre>

<p>Do I need more than 1 image for it to appear on the splash screen?</p>