A Database Error Occurred

Error Number: 1452

Cannot add or update a child row: a foreign key constraint fails (`formatic_new`.`activity`, CONSTRAINT `activity_ibfk_2` FOREIGN KEY (`id_user`) REFERENCES `user` (`id_user`) ON DELETE CASCADE ON UPDATE CASCADE)

INSERT INTO `activity` (`id_user`, `id_course`, `name_activity`, `type_content`, `description`) VALUES (0, '10', 'Hazlo fácil las búsquedas efectivas en Googlee', 10, 'Vio el artículo')

Filename: /home6/formatic/public_html/models/actividad_model.php

Line Number: 106