Warning: Undefined variable $sql_gs in C:\xampp\htdocs\modules\online_m.php on line 5
Fatal error: Uncaught Error: Call to a member function query() on null in C:\xampp\htdocs\modules\online_m.php:5
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\modules\online_m.php on line 5