При создание раздела в Easy Admin(Symfony) вылетает ошибка, не могу разобраться?

Создаю раздел с Тэгами, и при добавление в PostCrudController это раздел AssociationField::new('tag') вылетает ошибка.

The "tag" field is not a Doctrine association, so it cannot be used as an association field.

До этого аналогичный раздел с Категориями, и все работает.

Версия Symfony 5.6.1, EasyAdmin 3.1.4

PostCrudController
<?php

namespace App\Controller\Admin;

use App\Entity\Post;
use App\Entity\Tag;
use Doctrine\DBAL\Types\TextType;
use EasyCorp\Bundle\EasyAdminBundle\Config\Crud;
use EasyCorp\Bundle\EasyAdminBundle\Controller\AbstractCrudController;
use EasyCorp\Bundle\EasyAdminBundle\Field\AssociationField;
use EasyCorp\Bundle\EasyAdminBundle\Field\DateTimeField;
use EasyCorp\Bundle\EasyAdminBundle\Field\Field;
use EasyCorp\Bundle\EasyAdminBundle\Field\IdField;
use EasyCorp\Bundle\EasyAdminBundle\Field\ImageField;
use EasyCorp\Bundle\EasyAdminBundle\Field\SlugField;
use EasyCorp\Bundle\EasyAdminBundle\Field\TextEditorField;
use EasyCorp\Bundle\EasyAdminBundle\Field\TextField;
use Vich\UploaderBundle\Form\Type\VichImageType;
use EasyCorp\Bundle\EasyAdminBundle\Field\TextareaField;


class PostCrudController extends AbstractCrudController
{
public static function getEntityFqcn(): string
{
    return Post::class;
}

public function configureFields(string $pageName): iterable
{
    $imageFile = ImageField::new('thumbnailFile')->setFormType(VichImageType::class);
    $image = ImageField::new('thumbnails')->setBasePath('/uploads/files');
    $fields = [
        IdField::new('id')->hideOnForm(),
        AssociationField::new('category'),
        AssociationField::new('tag'),
        TextField::new('title'),
        TextEditorField::new('content'),
        Field::new('published'),
        DateTimeField::new('createdAt')
    ];

    if ($pageName == Crud::PAGE_INDEX || $pageName == Crud::PAGE_DETAIL) {
        $fields[] = $image;
     } else {
        $fields[] = $imageFile;
    }
    
    return $fields;
}

}

Код из Entity\Tag

<?php

namespace App\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity(repositoryClass="App\Repository\TagRepository")
 */
class Tag
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(type="integer")
     */
    private $id;

/**
 * @ORM\Column(type="string", length=255)
 */
private $name;

/**
 * @ORM\Column(type="string", length=255)
 */
private $slug;

/**
 * @ORM\ManyToMany(targetEntity="Post", inversedBy="tags")
 */
private $posts;

public function __construct()
{
    $this->posts = new ArrayCollection();
}

public function getId(): ?int
{
    return $this->id;
}

public function getName(): ?string
{
    return $this->name;
}

public function setName(string $name): self
{
    $this->name = $name;

    return $this;
}

public function getSlug(): ?string
{
    return $this->slug;
}

public function setSlug(string $slug): self
{
    $this->slug = $slug;

    return $this;
}

/**
 * @return Collection|Post[]
 */
public function getPosts(): Collection
{
    return $this->posts;
}

public function addPost(Post $post): self
{
    if (!$this->posts->contains($post)) {
        $this->posts[] = $post;
    }

    return $this;
}

public function removePost(Post $post): self
{
    if ($this->posts->contains($post)) {
        $this->posts->removeElement($post);
    }

    return $this;
}

public function __toString()
{
    return $this->name;
}
}