TranslationInterface, no supporting normalizer found. about apiplatformtranslationbundle HOT 2 CLOSED

    /**
     * @ORM\OneToMany(targetEntity="EventTranslation", mappedBy="translatable", fetch="EXTRA_LAZY", indexBy="locale", cascade={"PERSIST"}, orphanRemoval=true)
     * @Groups({"event_write", "translations"})
     */
    protected $translations;

    /**
     * @ORM\ManyToOne(targetEntity="Event", inversedBy="translations")
     */
    protected $translatable;

<?php

namespace App\Entity;

use ApiPlatform\Core\Annotation\ApiResource;
use Doctrine\ORM\Mapping as ORM;
use Locastic\ApiPlatformTranslationBundle\Model\AbstractTranslatable;
use Locastic\ApiPlatformTranslationBundle\Model\TranslationInterface;
use Symfony\Component\Serializer\Annotation\Groups;

/**
 * Class Event
 * @package App\Entity
 * @ORM\Entity
 */
class Event extends AbstractTranslatable
{
    /**
     * @var int The entity Id
     *
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @Groups({"event_read", "event_write"})
     * @ORM\Column
     */
    private $startAt;

    /**
     * @Groups({"event_read"})
     */
    private $title;

    /**
     * @Groups({"event_read"})
     */
    private $description;

    /**
     * @ORM\OneToMany(targetEntity="EventTranslation", mappedBy="translatable", fetch="EXTRA_LAZY", indexBy="locale", cascade={"PERSIST"}, orphanRemoval=true)
     * @Groups({"event_write", "translations"})
     */
    protected $translations;


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

    public function getStartAt()
    {
        return $this->startAt;
    }

    public function setStartAt($startAt)
    {
        $this->startAt = $startAt;
    }

    public function setTitle($title)
    {
        $this->getTranslation()->setTitle($title);
    }

    public function getTitle(): string
    {
        return $this->getTranslation()->getTitle();
    }

    public function setDescription($description)
    {
        $this->getTranslation()->setDescription($description);
    }

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

    protected function createTranslation(): TranslationInterface
    {
        return new EventTranslation();
    }
}

<?php

namespace App\Entity;

use ApiPlatform\Core\Annotation\ApiResource;
use Doctrine\ORM\Mapping as ORM;
use Locastic\ApiPlatformTranslationBundle\Model\AbstractTranslation;
use Locastic\ApiPlatformTranslationBundle\Model\TranslatableInterface;
use Symfony\Component\Serializer\Annotation\Groups;


/**
 * Class EventTranslation
 * @package App\Entity
 * @ORM\Entity
 */
class EventTranslation extends AbstractTranslation
{
    /**
     * @var int The entity Id
     *
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @var string
     *
     * @ORM\Column
     * @Groups({"event_read", "event_write", "translations"})
     */
    private $title;

    /**
     * @var string
     * @ORM\Column
     * @Groups({"event_read", "event_write", "translations"})
     */
    private $description;

    /**
     * @var string
     *
     * @ORM\Column
     * @Groups({"event_write", "translations"})
     */
    protected $locale;

    /**
     * @ORM\ManyToOne(targetEntity="Event", inversedBy="translations")
     */
    protected $translatable;

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

    /**
     * @param int $id
     */
    public function setId(int $id): void
    {
        $this->id = $id;
    }

    /**
     * @return string
     */
    public function getTitle(): string
    {
        return $this->title;
    }

    /**
     * @param string $title
     */
    public function setTitle(string $title): void
    {
        $this->title = $title;
    }

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

    /**
     * @param string $description
     */
    public function setDescription(string $description): void
    {
        $this->description = $description;
    }

    /**
     * @return string
     */
    public function getLocale(): string
    {
        return $this->locale;
    }

    /**
     * @param string $locale
     */
    public function setLocale(?string $locale): void
    {
        $this->locale = $locale;
    }
}