Erro SQL query-> Insert into continguts_lectures (id_contingut, ip, idioma) values ("", "3.236.239.91", "cat") Cannot add or update a child row: a foreign key constraint fails (`cmscore_reserves2`.`continguts_lectures`, CONSTRAINT `continguts_lectures_ibfk_1` FOREIGN KEY (`id_contingut`) REFERENCES `continguts` (`Id`) ON DELETE CASCADE ON UPDATE CASCADE)