Ecshop Vietnam Application Error

The application could not run because of the following error:

Type: E_NOTICE [8]

Message: Undefined offset: 1 in /home/bkshopuser/domains/bachkhoashop.com/public_html/modules/goods.php

Line: 103

Stack trace:

#0 /home/bkshopuser/domains/bachkhoashop.com/public_html/modules/goods.php(103): ErrorHandler->handleError(8, 'Undefined offse...', '/home/bkshopuse...', 103, Array)
#1 /home/bkshopuser/domains/bachkhoashop.com/public_html/index.php(32): include_once('/home/bkshopuse...')
#2 {main}