title: Angular: ng new error when I create an angular project
body: <p>I have this error using <strong>ng new project_name:</strong></p>
  
  <p><strong>An invalid configuration file was found ['angular.json']. Please delete the file before running the command.</strong></p>
  
  <p>I am getting this error I don't know how to get the solution.</p>
  
  <p>I uninstalled @angular/cli and installed again</p>
  
  <p>npm clean cache doesnt work too (I dont know if it is problem of my npm version</p>
  
  <pre><code>npm version is 6.4.1    
  node version is 8.11.1
  </code></pre>
  
  <p>what do i need to solve the problem?</p>