Fatal error: Uncaught PDOException: SQLSTATE[23000]: Integrity constraint violation: 1451 Cannot delete or update a parent row: a foreign key constraint fails (`penacova_matchcenter`.`decks`, CONSTRAINT `fk_deck_tournament` FOREIGN KEY (`tournament_id`) REFERENCES `tournaments` (`id`)) in /home/penacova/matchcenter.premodern.pt/db/tournaments_db.php:55 Stack trace: #0 /home/penacova/matchcenter.premodern.pt/db/tournaments_db.php(55): PDOStatement->execute() #1 /home/penacova/matchcenter.premodern.pt/ui/tournaments/tournaments_controller.php(100): deleteTournament() #2 /home/penacova/matchcenter.premodern.pt/ui/ui.php(10): require('/home/penacova/...') #3 /home/penacova/matchcenter.premodern.pt/index.php(34): require('/home/penacova/...') #4 {main} thrown in /home/penacova/matchcenter.premodern.pt/db/tournaments_db.php on line 55