symfony - EasyAdmin3 と symfony5 での実績に関するユーザーの問題

Question

この問題は Symfony 5 にあります。サイトの管理側を EasyAdmin v3 バンドルで作成しています。認識を追加しようとすると問題が発生し、次のエラー メッセージが表示されます。

https://i.stack.imgur.com/RXpLr.png

ユーザーを null にすることはできないと言われていますが、管理者アカウントで実現を追加しようとしていることが懸念されるため、管理者としてログインしていることを考慮して、このアカウントからの実現を自分自身に入れてもらいたいと考えています。以下は私のコード私の実現エンティティです。

<?php

namespace App\Entity;

use App\Repository\RealisationRepository;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\HttpFoundation\File\File;
use Vich\UploaderBundle\Mapping\Annotation as Vich;
/**
 * @ORM\Entity(repositoryClass=RealisationRepository::class)
 *  @Vich\Uploadable
 */
class Realisation
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

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

    /**
     * @ORM\Column(type="datetime")
     */
    private $createdAt;

    /**
     * @ORM\Column(type="datetime", nullable=true)
     */
    private $dateRealisation;

    /**
     * @ORM\Column(type="text")
     */
    private $description;

    /**
     * @ORM\Column(type="boolean")
     */
    private $portfolio;

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

    /**
     * @ORM\Column(type="string", length=255)
     */
    private $file;
    /**
     * @var File
     * @Vich\UploadableField(mapping="Realisation",fileNameProperty="file")
     */
    private $imageFile;

    /**
     * @ORM\ManyToOne(targetEntity=User::class, inversedBy="realisations")
     * @ORM\JoinColumn(nullable=false)
     */
    private $user;

    /**
     * @ORM\ManyToMany(targetEntity=Categorie::class, inversedBy="realisations")
     */
    private $categorie;

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

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

    public function getNom(): ?string
    {
        return $this->nom;
    }

    public function setNom(string $nom): self
    {
        $this->nom = $nom;

        return $this;
    }

    public function getCreatedAt(): ?\DateTimeInterface
    {
        return $this->createdAt;
    }

    public function setCreatedAt(\DateTimeInterface $createdAt): self
    {
        $this->createdAt = $createdAt;

        return $this;
    }

    public function getDateRealisation(): ?\DateTimeInterface
    {
        return $this->dateRealisation;
    }

    public function setDateRealisation(?\DateTimeInterface $dateRealisation): self
    {
        $this->dateRealisation = $dateRealisation;

        return $this;
    }

    public function getDescription(): ?string
    {
        return $this->description;
    }

    public function setDescription(string $description): self
    {
        $this->description = $description;

        return $this;
    }

    public function getPortfolio(): ?bool
    {
        return $this->portfolio;
    }

    public function setPortfolio(bool $portfolio): self
    {
        $this->portfolio = $portfolio;

        return $this;
    }

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

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

        return $this;
    }

    public function getFile(): ?string
    {
        return $this->file;
    }

    public function setFile(string $file): self
    {
        $this->file = $file;

        return $this;
    }

    public function getUser(): ?User
    {
        return $this->user;
    }

    public function setUser(?User $user): self
    {
        $this->user = $user;

        return $this;
    }

    /**
     * @return Collection|Categorie[]
     */
    public function getCategorie(): Collection
    {
        return $this->categorie;
    }

    public function addCategorie(Categorie $categorie): self
    {
        if (!$this->categorie->contains($categorie)) {
            $this->categorie[] = $categorie;
        }

        return $this;
    }

    public function removeCategorie(Categorie $categorie): self
    {
        $this->categorie->removeElement($categorie);

        return $this;
    }

    /**
     * @return File
     */
    public function getImageFile(): ?File
    {
        return $this->imageFile;
    }

    /**
     * @param File $imageFile
     */
    public function setImageFile(?File $imageFile = null)
    {
        $this->imageFile = $imageFile;
        if(null !== $imageFile){
            $this->dateRealisation = new \DateTime();
        }
    }
}

私の実現CrudController

<?php

namespace App\Controller\Admin;

use App\Entity\Realisation;
use EasyCorp\Bundle\EasyAdminBundle\Controller\AbstractCrudController;
use EasyCorp\Bundle\EasyAdminBundle\Field\AssociationField;
use EasyCorp\Bundle\EasyAdminBundle\Field\BooleanField;
use EasyCorp\Bundle\EasyAdminBundle\Field\DateTimeField;
use EasyCorp\Bundle\EasyAdminBundle\Field\ImageField;
use EasyCorp\Bundle\EasyAdminBundle\Field\IntegerField;
use EasyCorp\Bundle\EasyAdminBundle\Field\TextField;
use EasyCorp\Bundle\EasyAdminBundle\Field\TextEditorField;
use EasyCorp\Bundle\EasyAdminBundle\Field\IdField;
use EasyCorp\Bundle\EasyAdminBundle\Field\TextareaField;
use Symfony\Component\Form\Extension\Core\Type\DateTimeType;
use Symfony\Component\Validator\Constraints\DateTime;
use Vich\UploaderBundle\Form\Type\VichFileType;

class RealisationCrudController extends AbstractCrudController
{
    public static function getEntityFqcn(): string
    {
        return Realisation::class;

    }

    public function configureFields(string $pageName): iterable
    {

        return [
            IntegerField::new('id','ID')->onlyOnIndex(),
            TextField::new('nom'),
            TextEditorField::new('description'),
            DateTimeField::new('createdAt'),
            DateTimeField::new('dateRealisation'),
            TextField::new('slug'),
           BooleanField::new('portfolio'),
            TextareaField ::new('imageFile')
                ->setFormType(VichFileType::class)
                ->setLabel('Image'),


        ];
    }
}