Fatal error: Uncaught TypeError: Schedule::getTeacherSchedule(): Argument #1 ($teacherId) must be of type int, null given, called in /home/proyectosevg/public_html/01/guardias/app/controllers/TeacherController.php on line 280 and defined in /home/proyectosevg/public_html/01/guardias/app/models/Schedule.php:27 Stack trace: #0 /home/proyectosevg/public_html/01/guardias/app/controllers/TeacherController.php(280): Schedule->getTeacherSchedule(NULL) #1 /home/proyectosevg/public_html/01/guardias/public/index.php(52): TeacherController->schedule() #2 {main} thrown in /home/proyectosevg/public_html/01/guardias/app/models/Schedule.php on line 27