Warning: Undefined array key "dept_id" in E:\Xampp 8.0.3\htdocs\event_gallery_list.php on line 10

Fatal error: Uncaught TypeError: mysqli_fetch_array(): Argument #1 ($result) must be of type mysqli_result, bool given in E:\Xampp 8.0.3\htdocs\event_gallery_list.php:22 Stack trace: #0 E:\Xampp 8.0.3\htdocs\event_gallery_list.php(22): mysqli_fetch_array(false) #1 {main} thrown in E:\Xampp 8.0.3\htdocs\event_gallery_list.php on line 22