title: DOMDocument missing in php5.6
body: <p>I'm attempting to set up a store using opencart which i am honestly very new to.
  I bought a theme and for some reason the team uses vqmod.
  I was able to install the vqmod using:</p>
  
  <blockquote>
    <p>localhost/mystore/vqmod/install</p>
  </blockquote>
  
  <p>and i get this response.</p>
  
  <blockquote>
    <p>VQMOD ALREADY INSTALLED!</p>
  </blockquote>
  
  <p>Now, when i navigate to </p>
  
  <blockquote>
    <p>localhost/mystore</p>
  </blockquote>
  
  <p>An error pops up saying </p>
  
  <blockquote>
    <p>DomDocument</p>
  </blockquote>
  
  <p>The full error message is </p>
  
  <pre><code>VQMod::bootup - ERROR - YOU NEED THE PHP "DOMDocument" EXTENSION INSTALLED TO USE VQMod
  </code></pre>
  
  <p>After a little research, i figured i had to install the php5.6-xml and php7.0-xml which i have.</p>
  
  <p>However the error is still showing.</p>
  
  <p>I went into the vqmod code and noticed the section raising the error is this.</p>
  
  <pre><code>if(!class_exists('DOMDocument')) {
          die('VQMod::bootup - ERROR - YOU NEED THE PHP "DOMDocument" EXTENSION INSTALLED TO USE VQMod');
      }
  </code></pre>
  
  <p>which means there's a DOMDocument class i'm missing.</p>
  
  <p>However, i have tried everything i've seen online.
  From installing php-xml, purging php, installing php-dom,restarting apache2, checking phpinfo.</p>
  
  <p>None of these seem to solve the issue.</p>
  
  <p>How do i get the DOMDocument class?</p>