Fatal error: Uncaught mysqli_sql_exception: Cannot add or update a child row: a foreign key constraint fails (`gstsolut_nishati`.`group_messages`, CONSTRAINT `fk_gm_msg_group` FOREIGN KEY (`group_id`) REFERENCES `groups` (`id`) ON DELETE CASCADE) in /home/gstsolut/madhabahu.gstsolutions.co.tz/send_group_message.php:26 Stack trace: #0 /home/gstsolut/madhabahu.gstsolutions.co.tz/send_group_message.php(26): mysqli->query('INSERT INTO gro...') #1 {main} thrown in /home/gstsolut/madhabahu.gstsolutions.co.tz/send_group_message.php on line 26