public function validLoginStudentForm(LoginStudentForm $loginStudentForm)
{
$errors = new ErrorList();
if ($loginStudentForm->getEmail() === '') {
$errors->setError('login', 'Email field is empty');
}
if ($loginStudentForm->getPassword() === '') {
$errors->setError('login', 'Password field is empty');
}
return $errors;
}
