« MODx Parse Error »

MODx encountered the following error while attempting to parse the requested resource:
« PHP Parse Error »
PHP error debug
  Error: mysqli_connect(): (HY000/2002): No such file or directory 
  Error type/ Nr.: Warning - 2 
  File: /usr/home/spijkstr/domains/fastfwd.nl/public_html/manager/includes/extenders/dbapi.mysql.class.inc.php 
  Line: 87 
  Line 87 source: if (!$this->conn = ($persist ? mysqli_pconnect($host, $uid, $pwd) : mysqli_connect($host, $uid, $pwd))) {  
Parser timing
  MySQL: 0.0000 s(0 Requests)
  PHP: 0.0128 s 
  Total: 0.0128 s 
Error while inserting event log into database.