title: Google Cloud - Yii2 The directory is not writable by the Web process | frontend/web/assets
body: <p>I've uploaded the Yii2 advanced site on google cloud server. </p>
  
  <p>I've created instance with Centos 7</p>
  
  <p>Getting error :
  <strong>The directory is not writable by the Web process | frontend/web/assets</strong></p>
  
  <p>I've also set the <strong>permission 777</strong> but still not working</p>
  
  <p>how can I resolve the error.</p>