Fatal error: Uncaught PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'LIT526' in 'where clause' in /home/daw3/daw3.javicastillo.org/models/Materia.php:24 Stack trace: #0 /home/daw3/daw3.javicastillo.org/models/Materia.php(24): PDOStatement->execute() #1 /home/daw3/daw3.javicastillo.org/controllers/MateriaControlador.php(19): Materia->delete() #2 /home/daw3/daw3.javicastillo.org/public/index.php(9): MateriaController->delete('LIT526') #3 {main} thrown in /home/daw3/daw3.javicastillo.org/models/Materia.php on line 24