title: React JS - React Material UI icons not working?
body: <p>I am using react Material UI, and I received the following error.</p>
  
  <blockquote>
    <p>"Module not found: Can't resolve '@material-ui/icons/Lock'"</p>
  </blockquote>
  
  <pre><code>import LockIcon from '@material-ui/icons/Lock';
  </code></pre>
  
  <p>How can I fix this?</p>