Why my symfony captcha always return valid?

I followed this tutorial to add a captcha to my form.

First I install it using

composer require captcha-com/symfony-captcha-bundle:"4.*"

After I Install it, I got an error on a file called captcha.html.twigError:

captcha Unexpected "spaceless" tag (expecting closing tag for the"block" tag defined near line 2).

So I changed {% spaceless %} to {% apply spaceless %}And the error is gone.

But My captcha bot always returns True (even when I don't even fill it.Here is the ->add() function of my form:

->add('captchaCode', CaptchaType::class, ['captchaConfig' => 'ExampleCaptchaUserRegistration','constraints' => [        new ValidCaptcha(['message' => 'Invalid captcha, please try again',        ]),    ],]);

Code of Routes.yaml :

captcha_routing:    resource: "@CaptchaBundle/Resources/config/routing.yml"

Code of captcha.php :

<?php // app/config/packages/captcha.phpif (!class_exists('CaptchaConfiguration')) { return; }// BotDetect PHP Captcha configuration optionsreturn [    // Captcha configuration for example form'ExampleCaptchaUserRegistration' => ['UserInputID' => 'captchaCode','ImageWidth' => 250,'ImageHeight' => 50,    ],];

Captcha field on the User.php entity:

protected $captchaCode;public function getCaptchaCode(){  return $this->captchaCode;}public function setCaptchaCode($captchaCode){  $this->captchaCode = $captchaCode;}

Code in the View (twig)

<span class="txt1 p-b-11">    Are You a Robot?</span><div class="wrap-input100 m-b-36">    {{ form_widget(form.captchaCode, {'attr': {'class': 'input100'} }) }}       <span class="focus-input100"></span></div><div class="error">{{ form_errors(form.captchaCode) }} </div>

Controlleur function:

/** * @Route("/register", name="user_register", methods={"GET","POST"}) */public function register(Request $request,UserPasswordEncoderInterface $encoder): Response{    $user = new User();    $form = $this->createForm(UserType::class, $user, ['validation_groups' => ['register'], ]);    $form ->remove("description");    $form ->remove("phone");    $form ->remove("website");    $form ->remove("facebook");    $form ->remove("picture");    $form->handleRequest($request);    if ($form->isSubmitted() && $form->isValid()) {        $hash = $encoder->encodePassword($user,$user->getPassword());        $user->setPassword($hash);        // defaults values (user can edit them later)        $user->setDescription("Apparently, this User prefers to keep an air of mystery about them.");        $user->setPhone(null);        $user->setPicture("default.png");        $user->setWebsite(null);        $user->setFacebook(null);        $user->setRoles(["ROLE_USER"]);        // end default values        $entityManager = $this->getDoctrine()->getManager();        $entityManager->persist($user);        $entityManager->flush();        return $this->redirectToRoute('user_login');}    return $this->render('authentication/register.html.twig', ['user' => $user,'form' => $form->createView(),    ]);}