Notice: Undefined variable: conn in C:\xampp\htdocs\WabST\category.php on line 105

Fatal error: Uncaught Error: Call to a member function prepare() on null in C:\xampp\htdocs\WabST\category.php:105 Stack trace: #0 {main} thrown in C:\xampp\htdocs\WabST\category.php on line 105