Fatal error: Uncaught Error: Undefined constant "DEFAULT_SITE_LANG" in /var/www/html/util.php:165
Stack trace:
#0 /var/www/html/util.php(165): constant('DEFAULT_SITE_LA...')
#1 /var/www/html/util.php(168): defaultlanguageSession()
#2 /var/www/html/includes/header.php(12): include('/var/www/html/u...')
#3 /var/www/html/purchases-returns/index.php(1): include('/var/www/html/i...')
#4 {main}
thrown in /var/www/html/util.php on line 165