Fatal error: Uncaught mysqli_sql_exception: Cannot delete or update a parent row: a foreign key constraint fails (`arthurletohic_musique_reservation`.`reservation`, CONSTRAINT `reservation_ibfk_1` FOREIGN KEY (`id_client`) REFERENCES `client` (`id_client`)) in /home/arthurletohic/musique.arthur.letohic.mmi-velizy.fr/index.php:30 Stack trace: #0 /home/arthurletohic/musique.arthur.letohic.mmi-velizy.fr/index.php(30): mysqli_query() #1 {main} thrown in /home/arthurletohic/musique.arthur.letohic.mmi-velizy.fr/index.php on line 30