Ecshop Vietnam Application Error

The application could not run because of the following error:

Type: E_WARNING [2]

Message: Invalid argument supplied for foreach() in /home/bkshopuser/domains/bachkhoashop.com/public_html/modules/topic.php

Line: 39

Stack trace:

#0 /home/bkshopuser/domains/bachkhoashop.com/public_html/modules/topic.php(39): ErrorHandler->handleError(2, 'Invalid argumen...', '/home/bkshopuse...', 39, Array)
#1 /home/bkshopuser/domains/bachkhoashop.com/public_html/index.php(32): include_once('/home/bkshopuse...')
#2 {main}