phpFreeChat cannot be initialized, please correct these errors:

The source code

/var/www/vhosts/cafegitane.com/httpdocs/chat/demo/demo66_in_occitan.php


<?php

require_once dirname(__FILE__)."/../src/phpfreechat.class.php";

$params["serverid"]      = md5(__FILE__); // calculate a unique id for this chat
$params["language"]      = "oc_FR";
$chat = new phpFreeChat( $params );

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>phpFreeChat demo</title>
  </head>

  <body>
    <?php $chat->printChat(); ?>

  </body>
</html>