Fatal error: Uncaught mysqli_sql_exception: Unknown column 'id' in 'WHERE' in /home/relaxnec/public_html/cursos/listar_cursos.php:15 Stack trace: #0 /home/relaxnec/public_html/cursos/listar_cursos.php(15): mysqli_query(Object(mysqli), 'DELETE FROM cur...') #1 {main} thrown in /home/relaxnec/public_html/cursos/listar_cursos.php on line 15