Call to a member function getDefaultValues() on null error

My login controller has an error, I don't know why but the Windows system runs fine as if Linux has an error

A PHP Error was encountered
Severity: Notice
Message: Undefined property: Login::$login
Filename: controllers/Login.php
Line Number: 11

An uncaught Exception was encountered
Type: Error
Message: Call to a member function getDefaultValues() on null
Filename: /var/www/html/sms/application/controllers/Login.php
Line Number: 11

Controller:

PHP Code:

<?php
class Login extends MY_Controller
{
    public function index ()
    
    {
        $input = (object) $this->input->post(null, true);
        if (! $_POST) 
        
        {
            $input = (object) $this->login->getDefaultValues();
        }
                 
        if (! $this->login->validate()) {
            $this->load->view('login/form', compact('input'));
            return;
        }

        if ($this->login->login($input)) {
            redirect(base_url(), 'refresh');
        }

        flashMessage(
            'error',
            'Username atau password salah.
             Atau akun anda sedang diblokir.'
        );
        redirect('login', 'refresh');
    }

    public function logout()
    {
        $this->login->logout();
        redirect(base_url(), 'refresh');
    }
} 


LogiModel:

PHP Code:

<?php
class LoginModel extends MY_Model
{
    public $table = 'user';

    public function getValidationRules()
    {
        $validationRules = [
            [
                'field' => 'username',
                'label' => 'Username',
                'rules' => 'trim|required'
            ],
            [
                'field' => 'password',
                'label' => 'Password',
                'rules' => 'trim|required'
            ],
        ];

        return $validationRules;
    }

    public function getDefaultValues()
    {
        return [
            'username' => '',
            'password' => ''
        ];
    }

    public function login($input)
    {
        $input->password = md5($input->password);

        $user = $this->db->where('username', $input->username)
                         ->where('password', $input->password)
                         ->where('isBlokir', 'n')
                         ->limit(1)
                         ->get($this->table)
                         ->row();

        if (count($user)) {
            $data = [
                'username' => $user->username,
                'level'    => $user->level,
                'isLogin'  => true,
                'userID'   => $user->ID
            ];
            $this->session->set_userdata($data);
            return true;
        }

        return false;
    }

    public function logout()
    {
        $data = ['username', 'level', 'isLogin', 'userID'];
        $this->session->unset_userdata($data);
        $this->session->sess_destroy();
    }
} 


I beg you please answer why is my login error?

Your model filename needs to be UCfirst, i.e. Loginmodel, not LoginModel.
Linux is case-sensitive, whereas Windows lets you get away with not following the expected naming.
This is a Windows problem, not a Linux error

I changed the name of the file but it doesn't work too?

You refer to a variable $login, which does not appear to be initialized.
It appears that you expect it to refer to your Loginmodel, which would happen if your controller had

Code:

$this->load->('loginmodel','login');

See https://www.codeigniter.com/user_guide/l...der::model

the code works with thanks

if this code is how naming is in linux because 404 Page Not Found, the model name is SmsBroadcastmodel.php

I beg you please answer

Code:

$this->load->model('SmsBroadcastmodel','smsbroadcast');