« 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/johnan9/public_html/sfsalsafestival.com/manager/includes/document.parser.class.inc.php 
  Line: 877 
  Line 877 source: foreach ($this->aliasListing as $item) {  
 
Parser timing
  MySQL: 0.0027 s(1 Requests)
  PHP: 0.0705 s 
  Total: 0.0733 s 
Listing all pages