Warning: Undefined variable $auth in /home/ieltsasl/public_html/head.php on line 16

Fatal error: Uncaught Error: Call to a member function check() on null in /home/ieltsasl/public_html/head.php:16 Stack trace: #0 /home/ieltsasl/public_html/user.php(72): include_once() #1 {main} thrown in /home/ieltsasl/public_html/head.php on line 16