title: How to correct "preload key requests" performance problem on lighthouse with vue-cli and vue.config.js
body: <p>I use Vue-CLI to build my vue.js project.</p>
  <p>When I use lighthouse, I see big opportunities of performance: &quot;Preload Key requests&quot; with these warnings:</p>
  <ul>
  <li>A preload  was found for &quot;.../js/chunk-vendors.505a9ffc.js&quot; but was not used by the browser. Check that you are using the <code>crossorigin</code> attribute properly.</li>
  <li>A preload  was found for &quot;.../js/app.a1661204.js&quot; but was not used by the browser. Check that you are using the <code>crossorigin</code> attribute properly.</li>
  <li>A preload  was found for &quot;.../css/chunk-vendors.89b73702.css&quot; but was not used by the browser. Check that you are using the <code>crossorigin</code> attribute properly.</li>
  <li>A preload  was found for &quot;.../css/app.9ea691b0.css&quot; but was not used by the browser. Check that you are using the <code>crossorigin</code> attribute properly.</li>
  </ul>
  <p>Does anyone have a solution to fix it with Vue-CLI and vue.config.js to modify the webpack config?</p>
  <p>And can you explain the problem?</p>