Variable "form" does not exist. Symfony 4 - mongodb

Question

I am new to Symfony 4 and I am following this tutorial "https://symfony.com/doc/4.4/forms.html" but it does not recognize my variable "form" and I don't know why (everything is up to date).
My Controller :
<?php
namespace App\Controller;
use App\Entity\Task;
use App\Form\Type\TaskType;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
class TaskController extends AbstractController
{
public function new(Request $request)
{
// creates a task object and initializes some data for this example
$task = new Task();
$task->setTask('Write a blog post');
$task->setDueDate(new \DateTime('tomorrow'));
/*$form = $this->createFormBuilder($task)
->add('task', TextType::class)
->add('dueDate', DateType::class)
->add('save', SubmitType::class, ['label' => 'Create Task'])
->setMethod('GET')
->getForm();*/
$form = $this->createForm(TaskType::class, $task);
return $this->render('search/search.html.twig', [
'form' => $form->createView(),
]);
}
}
My TaskType.php :
<?php
namespace App\Form\Type;
use App\Entity\Task;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\DateType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
class TaskType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('task', TextType::class)
->add('dueDate', DateType::class)
->add('save', SubmitType::class);
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Task::class,
]);
}
}
And my Task.php :
<?php
namespace App\Entity;
class Task
{
protected $task;
protected $dueDate;
public function getTask()
{
return $this->task;
}
public function setTask($task)
{
$this->task = $task;
}
public function getDueDate()
{
return $this->dueDate;
}
public function setDueDate(\DateTime $dueDate = null)
{
$this->dueDate = $dueDate;
}
}
If you see any error from my part I am open..
I am calling my form here :
{{ form_start(form) }}
{{ form(form) }}
{{ form_end(form) }}
In my "search.html.twig".