« MODx Parse Error »

MODx encountered the following error while attempting to parse the requested resource:
« PHP Parse Error »
 
PHP error debug
  Error: Invalid argument supplied for foreach()  
  Error type/ Nr.: Warning - 2  
  File: /home/na-igre/www/light/manager/includes/document.parser.class.inc.php  
  Line: 881  
  Line 881 source: foreach ($this->aliasListing as $item) {  
 
Parser timing
  MySQL: 0.0072 s (1 Requests)
  PHP: 0.0154 s  
  Total: 0.0226 s