Problem with my Authentication Controller

Hello,

I'm a complete beginner with the php language and the Codeigniter framework but for a school project our teacher gave us the order to use only the Codeigniter framework to code our site.
I am currently following a video to help me make the authentication system but when I launch the connection with the login form, I have a problem that results from that. I looked to see if I had an error in the console but there is nothing at all indicated.
I tried doing a var_dump to show me the error and it only shows me "NULL".
I tried to fix the problem as the instructor put it in his video by using the if(!is_null(item)) command... but after that nothing happens.
Here is my code, Controller, Routes and Views and also the screens.

Login Controller :

Code:

                $record = $model->where("email", $this->request->getVar("email"))
                ->where("password", $this->request->getVar("password"))
                ->first();
                var_dump($record);
                $session = session();
                if(!is_null($record)){
                    //donnée trouvée dans la bdd
                    $sess_data = [
                        "email"                => $record["email"],
                        "pseudo"                  => $record["pseudo"],
                        "id_role"              => $record["id_role"]
                    ];
                    $session->set($sess_data);
                    if($record['id_role']=="eleve"){
                        // direction tableau de bord "élève"
                        return view('eleve_dashboard/dashboard');
                    }
                    else if($record['id_role']=="modo"){
                        // direction tableau de bord "modo"
                        return view('modo_dashboard/dashboard');
                    }
                    else{
                        // direction tableau de bord "admin"
                        return view('admin_dashboard/dashboard');
                    }
                    return redirect()->to(base_url($url));
                }
                else{
                    $session->set("failed_message","Vos informations ne correspondent pas, réessayer.");
                    $session->markAsFlashdata('failed_message');
                    return redirect()->back()->withInput();
                }

login.php Views :

Code:

                        <h3>Connexion</h3>
                        <?php $session = session(); ?>
                        <?php if(!is_null($session->getFlashdata('failed_message'))): ?>
                        <div class="alert alert-danger">
                            <?php echo $session->getFlashdata('failed_message'); ?>
                        </div>
                        <?php endif ?>

                        <?php $validation = \Config\Services::validation(); ?>
                        <form action="<?php echo base_url('login')?>" method="POST">
                            <div class="input__item">
                                <input type="text" placeholder="Email address" name="email" value="<?php echo old('email')?>">
                                <span class="icon_mail"></span>
                                <div class="text-danger">
                                    <?php echo $validation->getError("email")?>
                                </div>
                            </div>
                            <div class="input__item">
                                <input type="text" placeholder="Password" name="password" value="<?php echo old('password')?>">
                                <span class="icon_lock"></span>
                                <div class="text-danger">
                                    <?php echo $validation->getError("password")?>
                                </div>
                            </div>
                            <button type="submit" name ="identification" class="site-btn">Se connecter</button>
                        </form>

Routes :

Code:

$routes->get('/login','Login::login');
$routes->post('/login','Login::login');
$routes->group('groupe', ['namespace' => 'App\Controllers'], function ($routes) {
    $routes->get('eleve', 'DashboardController::eleve');
    $routes->get('admin', 'AdminDashboardController::index');
});

I got this as an error, I log in with the right email and password but it leaves me on this page with the error that my information is not correct.



With var_dump


Normally it should direct me to this page.



Thanks for any help you can give me.