title: Wordpress Fatal error: require(): Failed opening required on line 97
body: <p>I have a friend who has a problem on his website under wordpress.
  Wordpress did an update 10 hours ago and since, we cannot enter the website.
  We aren't developpers and we don't know anything about it, and we don't know how to fix this easily. Can someone help us please ?
  (Sorry for the bad english as I'm french)</p>
  
  <p>When I try to get on the website, it show this :</p>
  
  <blockquote>
    <p>Fatal error: require(): Failed opening required
    '/home/u438775107/public_html/wp-includes/class-wp-list-util.php'
    (include_path='.:/opt/php-5.5/pear') in
    /home/u438775107/public_html/wp-settings.php on line 97</p>
  </blockquote>