Realmud 
User Registration
Fatal error: Uncaught Error: Call to undefined function required() in /home/t4cweb/public_html/setup.t4c.com/cms/theme/t4c/register.tpl.php:16
Stack trace:
#0 /home/t4cweb/public_html/setup.t4c.com/cms/register.php(13): require_once()
#1 {main}
thrown in /home/t4cweb/public_html/setup.t4c.com/cms/theme/t4c/register.tpl.php on line 16