« MODx Parse Error »

MODx encountered the following error while attempting to parse the requested resource:
« PHP Parse Error »
PHP error debug
  Error: mysql_query(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead 
  Error type/ Nr.: - 8192 
  File: /customers/e/c/7/mattix.de/httpd.www/manager/includes/document.parser.class.inc.php(705) : eval()'d code 
  Line: 295 
Parser timing
  MySQL: 0.1203 s s(51 Requests)
  PHP: 0.0457 s s 
  Total: 0.1660 s s