我正在嘗試將 id 從一個編隊表傳遞到票證表，但我無法傳遞此錯誤..關聯字段“App\Entity\Ticket#$formation”的“App\Entity\Formation”類型的預期值，取而代之的是“string”。組建實體：/** * @ORM\Entity(repositoryClass="App\Repository\FormationRepository") */class Formation{    /**     * @ORM\Id()     * @ORM\GeneratedValue()     * @ORM\Column(type="integer")     */    private $id;    /**     * @ORM\Column(type="array", nullable=true)     */    private $formations = [];    /**     * @ORM\Column(type="string", length=180, unique=true)     */    private $customerName;...票務實體：/** * @ORM\MappedSuperclass() */class Ticket implements TicketInterface{    use Timestampable;    /**     * @var integer     *     * @ORM\Column(name="id", type="integer")     * @ORM\Id     * @ORM\GeneratedValue(strategy="IDENTITY")     */    private $id;    /**     * @ORM\ManyToOne(targetEntity="Symfony\Component\Security\Core\User\UserInterface")     * @ORM\JoinColumn(name="author", referencedColumnName="id", nullable=true)     */    private $author;    /**     * @ORM\ManyToOne(targetEntity="App\Entity\Formation")     * @ORM\JoinColumn(nullable=false)     */    private $formation;...我的ticketControlleraddTicket()：public function addTicket(Request $request, TicketManager $ticketManager): Response{    $ticket = $ticketManager->newClass();    $user = $this->getUser();    $formationId = $user->getFormationId()->getId();    $ticketForm = $this->createForm(TicketForm::class, $ticket);    $ticketForm->handleRequest($request);    if ($ticketForm->isSubmitted() && $ticketForm->isValid()) {        $ticketManager->createTicket($user, $ticket, $formationId);        $this->addFlash('success', 'Le ticket est en ligne !');        return $this->redirectToRoute('ticketing_list');    }    return $this->render($this->ticketingTemplates['new'], [        'form' => $ticketForm->createView(),    ]);}我希望在添加票證時，將“formationId”保存在票證表中。其余的都很好，只有formulaId的注冊不行