为什么这个Doctrine EntityListener在Symfony6中不起作用?

在Symfony 6.3上,我使用这个基于监听器的 on the documentation 。它在保存实体之前计算附加数据:

<?php
namespace App\EventListener;

use App\Entity\Simulation;
use App\Goflex\Simulator;
use Doctrine\Bundle\DoctrineBundle\Attribute\AsEntityListener;
use Doctrine\ORM\Events;

#[AsEntityListener(event: Events::preUpdate, method: 'consolidate', entity: Simulation::class)]
class SimulationConsolidator
{
    private function consolidate(Simulation $simulation, $event): void
    {
        // for debugging purpose
        throw new \Exception("test"); 
        // My logic...
        $simulation->setXxxxx();
    }
}

控制器按预期工作-即它确实保存了我的实体:

// ...
class SimulationController extends AbstractController
{
    // ...
    public function save(Simulation $simulation, Request $request, EntityManagerInterface $em): Response
    {
        $success = true;
        $errorMsg = null;

        try {
            $form = $this->createForm(SimulationType::class, $simulation);
            $form->handleRequest($request);
            if ($form->isSubmitted()) {
                if(true !== $form->isValid()) {
                    foreach($form->getErrors(true) as $error) {
                        $errorMsg .= $error->getMessage()."\n";
                    }
                }
                else {
                    $em->persist($simulation);
                    $em->flush();
                }
            }
        } catch (\Exception $exception) {
            $success = false;
            $errorMsg = $exception->getMessage();
        }

        return $this->json([
            'success' => $success,
            'errorMsg' => $errorMsg,
        ]);
    }

我尝试在services.yaml中声明侦听器:

services:
    App\EventListener\SimulationConsolidator:
        tags:
            -
                name: 'doctrine.orm.entity_listener'
                event: 'preUpdate'
                entity: 'App\Entity\Simulation'
                method: 'consolidate'

有趣的是,出现了这个错误:
“App\Entity\Simulation”中的实体侦听器“App\EventListener\SimulationConsolidator#consolidate()”已声明,但只能声明一次。

这意味着我的倾听者 是 已声明,但从未触发。我“应该”至少得到我的“测试”异常。为什么它不触发?