title: Resolve Error default site does not exist after update to Ubuntu 13.10 and apache 2.4
body: <p>I updated my ubuntu lately, I wanted to program in my Ubuntu 13.10, and was setting up apache2, and every time I run the command:</p>
  
  <pre><code>sudo a2ensite default
  </code></pre>
  
  <p>I get the following error: </p>
  
  <blockquote>
    <p>Error default site does not exist</p>
  </blockquote>
  
  <p>how can I fix this issue?</p>