title: How to fix: error: '<filename>' does not have a commit checked out fatal: adding files failed when inputting "git add ." in command prompt
body: <p>I'm trying to add a ruby rails file to my repository in gitlab but it somehow wouldn't allow me to add the file saying that my file does not have commit checked out.</p>
  <p>I've tried git pull, making the the file again and git adding but still wont work</p>
  <pre><code>error: '172069/08_lab_routes_controllers_views_172069_172188-Copy/adventure_game/' does not have a commit checked out
  fatal: adding files failed
  </code></pre>