Fatal error: Uncaught TypeError: Teacher::getTeacher(): Argument #1 ($id) must be of type int, null given, called in /home/proyectosevg/public_html/01/guardias/app/controllers/TeacherController.php on line 20 and defined in /home/proyectosevg/public_html/01/guardias/app/models/Teacher.php:14 Stack trace: #0 /home/proyectosevg/public_html/01/guardias/app/controllers/TeacherController.php(20): Teacher->getTeacher(NULL) #1 /home/proyectosevg/public_html/01/guardias/public/index.php(52): TeacherController->home() #2 {main} thrown in /home/proyectosevg/public_html/01/guardias/app/models/Teacher.php on line 14