The repository stopped working, the entity constructor is not called?

Question

symfony

Dear Toasters!
Help to solve a problem - the third day I fight! Started learning symfony. The task is as follows:
Entity 1 - sad (id, title)
Entity 2 - me(id, val)
Relationship: for each entity 1 there are many entities 2.
I do this:
Entity 1 - sad

<?php
namespace Stocker\StockBundle\Entity;

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

/**
 * @ORM\Entity(repositoryClass="Stocker\StockBundle\Entity\Repository\SadRepository")
 * @ORM\Table(name="sad")
 */
class Sad
{
    public function __construct()
    {
        $this->mes=new ArrayCollection();
    }
    

    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="string")
     */
    protected $title;
    
    /**
     * @ORM\OneToMany(targetEntity="Me", mappedBy="Sad")
     */
    private $mes;

Essence 2 - me

<?php
namespace Stocker\StockBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity(repositoryClass="Stocker\StockBundle\Entity\Repository\Sad1Repository")
 * @ORM\Table(name="me")
 */
class Me
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="string")
     */
    protected $val;
    
    /**
     * @ORM\ManyToOne(targetEntity="Sad", inversedBy="mes")
     * @ORM\JoinColumn(name="sad_id", referencedColumnName="id")
     */
    private $sad;

sadRepository:

<?php

namespace Stocker\StockBundle\Entity\Repository;

/**
 * SadRepository
 *
 * This class was generated by the Doctrine ORM. Add your own custom
 * repository methods below.
 */
class SadRepository extends \Doctrine\ORM\EntityRepository
{
    public function getSad(){
        $qb=$this->createQueryBuilder('f')
                ->select('f');
        return $qb->getQuery()->getResult();
    }
}

Next:
php app/console doctrine:generate:entities Stocker\StockBundle Create getters ,
seters
php app/console doctrine:schema:update --force Create
tables in the database
from the parent table in a drop-down list. That is, the connections are created correctly.
Next, in the controller, I call the desired repository. In reply:

array:2 [▼
  0 => Sad {#458 ▼
    #id: 1
    #title: "asdf"
    -mes: PersistentCollection {#475 ▼
      -snapshot: []
      -owner: Sad {#458}
      -association: array:15 [ …15]
      -em: EntityManager {#106 …11}
      -backRefFieldName: "Sad"
      -typeClass: ClassMetadata {#456 …}
      -isDirty: false
      #collection: ArrayCollection {#484 ▼
       <b> -elements: []</b>
      }
     <b> #initialized: false</b>
    }
  }
  1 => Sad {#482 ▶}
]

Problem: Collection of objects is not created.
Prehistory. Initially, I did everything the same way, everything worked, everything is fine. I started to fence many-to-many, create an intermediate table, etc. (Now I have already understood that the ORM itself will create intermediate tables). As a result of these operations, this algorithm stopped working, referring to #initialized: false
If you put die in the constructor of Entity 1, then nothing happens. That is, obviously the entity constructor has ceased to be called.
I tried to write everything in a new way, delete tables from the database, create new entities, delete and create old ones. In short, no matter how I try to repeat the algorithm, the collections are still not filled.