title: Ubuntu create-react-app fails with permission denied
body: <p>I'm getting a weird error:</p>
  
  <pre><code>Unhandled rejection Error: EACCES: permission denied, mkdir '/home/ubuntu/.npm/_cacache/index-v5/14/36'atus
  </code></pre>
  
  <p>I just install npm (6.4.1) and node (11.2.0) on an AWS instance without problems. I installed create-react-app globally. The error says <code>This is an error with npm itself.</code></p>
  
  <p>I'm kind of at a loss. I created the directory /home/ubuntu/.npm/_cacache/index-v5/14 and it still wouldn't succeed. I obviously own and have write permissions in /home/ubuntu. </p>
  
  <p>It looks like it succeeds with sudo. why ?</p>
  
  <p>Edit: ubuntu:ubuntu owns the current and parent directory (I'm in /home/ubuntu/workspace)</p>