title: Issue while angular project update from 4 to 6
body: <p>I am updating my current project from angular 4 version to 6. I followed the steps mentioned in this URL: <a href="https://update.angular.io/" rel="nofollow noreferrer">https://update.angular.io/</a></p>
  
  <p>I reached up to <code>ng update @angular/core</code> where I am facing issues with dependencies. I get the following errors:-</p>
  
  <p><a href="https://i.stack.imgur.com/8ApFH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8ApFH.png" alt="enter image description here"></a></p>