Remember me function causes unknown error - php

Question

I want to make Laravel's "remember me" feature. The problem is that, whenever I create a remember_token column, I am unable to log in or register a user, as it gives some unknown error that I cannot find in any way. Also, I have no idea how to apply this functionality with my code.
Login and Registration Form (except that the registration form does not have a checkbox):
<form class="login-form needs-validation" method="POST" action="{{ route('loja.logar') }}" novalidate>
#csrf
<div class="form-group">
<input type="email" id="email" name="email" aria-describedby="emailHelp" placeholder="Email" required>
</div>
<div class="form-group">
<input type="password" id="password" name="password" placeholder="Password" required>
</div>
<div class="custom-control custom-checkbox mr-sm-2">
<input type="checkbox" name="remember" class="custom-control-input" id="remember">
<label class="custom-control-label" for="remember">Remember me</label>
</div>
<button type="submit" id="submit" name="submit">Enviar</button>
</form>
I'm not using Model, just a controller that is the SiteController:
public function logar(Request $req)
{
$data = $req->all();
$user = Auth::attempt(['email' => $data['email'], 'password' => $data['password']]);
$this->validate($req, [
'email' => ['required', 'email'],
'password' => 'required'
]);
if ($user) {
return redirect()->route('loja.index');
} else {
return redirect()->route('loja.login')
->with('status-verification', 'Error. Try again!');
}
}
public function regist(Request $req)
{
$data = $req->all();
$validator = $this->validate($req, [
'email' => [
'required',
'email',
function ($attribute, $value, $fail) {
if (Users::whereEmail($value)->count() > 0) {
echo 1;
}
},
]
]);
if ($validator) {
Users::create([
'email' => $data['email'],
'password' => Hash::make($data['password'])
]);
return redirect()->route('loja.register');
}
}
User Table:
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->bigIncrements('id')->unique();
$table->string('email', 191)->unique();
$table->string('password');
});
}