title: How to debug npm ERR! errno -4094?
body: <p>I'm doing my first React project, and following the MOOC instructions, I've had to create routes by this command : <strong>npm install react-router-dom</strong></p>
  <p>Then the console return me these errors :</p>
  <p><a href="https://i.stack.imgur.com/P0UEk.png" rel="nofollow noreferrer">Errors displayed</a></p>
  <p>I tried to :</p>
  <ul>
  <li>do it with my IDE closed,</li>
  <li>the project was not running,</li>
  <li>in different command prompt</li>
  </ul>
  <p>Thank you</p>