Fatal error: Uncaught mysqli_sql_exception: Cannot delete or update a parent row: a foreign key constraint fails (`cyco223ict301`.`Transactions`, CONSTRAINT `Transactions_ibfk_1` FOREIGN KEY (`order_id`) REFERENCES `Orders` (`order_id`)) in /var/www/html/ict301/201/cyco223/final301/delete_order.php:5 Stack trace: #0 /var/www/html/ict301/201/cyco223/final301/delete_order.php(5): mysqli_query() #1 {main} thrown in /var/www/html/ict301/201/cyco223/final301/delete_order.php on line 5