Fatal error: Uncaught mysqli_sql_exception: Cannot delete or update a parent row: a foreign key constraint fails (`restoran`.`ugovori_veselja`, CONSTRAINT `fk_ugovor_rezervacija` FOREIGN KEY (`idrezervacije`) REFERENCES `rezervacije` (`id`) ON UPDATE CASCADE) in Q:\Apache24\htdocs\Restoran\rezervacije_obrisi.php:27 Stack trace: #0 Q:\Apache24\htdocs\Restoran\rezervacije_obrisi.php(27): mysqli_query(Object(mysqli), '\r\n \r\n DEL...') #1 {main} thrown in Q:\Apache24\htdocs\Restoran\rezervacije_obrisi.php on line 27