doctrine : generate entities from the database - php

Question

I'm using doctrine to generate the entities from database in command line
doctrine orm:convert-mapping --force --from-database annotation ./Api/Entity
The php class is created correctly but when i try to use the repository to load the entity from the database
$decompte=$entityManager->getRepository(Decompte::class)->find(31);
I'm getting this exception
Class "entity\Decompte" is not a valid entity or mapped super class.
and please find above the entire code of the class entity\Decompte
<?php
use Doctrine\ORM\Mapping as ORM;
/**
* Decompte
*
* #ORM\Table(name="decompte", indexes={#ORM\Index(name="N°D", columns={"ID"})})
* #ORM\Entity
*/
class Decompte
{
/**
* #var int
*
* #ORM\Column(name="ID", type="integer", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* #var int|null
*
* #ORM\Column(name="NPRIXD", type="integer", nullable=true)
*/
private $nprixd;
/**
* #var string|null
*
* #ORM\Column(name="DESIGNATIOND", type="string", length=43, nullable=true)
*/
private $designationd;
/**
* #var string|null
*
* #ORM\Column(name="UNITED", type="string", length=2, nullable=true)
*/
private $united;
/**
* #var int|null
*
* #ORM\Column(name="QTED", type="integer", nullable=true)
*/
private $qted;
/**
* #var int|null
*
* #ORM\Column(name="PRIXHTD", type="integer", nullable=true)
*/
private $prixhtd;
/**
* #var string|null
*
* #ORM\Column(name="DECOMPTED", type="string", length=2, nullable=true)
*/
private $decompted;
/**
* #var int|null
*
* #ORM\Column(name="TOTALD", type="integer", nullable=true)
*/
private $totald;
/**
* #var string|null
*
* #ORM\Column(name="QMARCHE", type="string", length=11, nullable=true)
*/
private $qmarche;
/**
* #var string|null
*
* #ORM\Column(name="QDECOMPTE", type="string", length=5, nullable=true)
*/
private $qdecompte;
/**
* #var int|null
*
* #ORM\Column(name="SMARCHE", type="integer", nullable=true)
*/
private $smarche;
/**
* #var string|null
*
* #ORM\Column(name="SDECOMPTE", type="string", length=6, nullable=true)
*/
private $sdecompte;
/**
* #var int|null
*
* #ORM\Column(name="NDMR", type="integer", nullable=true)
*/
private $ndmr;
/**
* #var string|null
*
* #ORM\Column(name="RESTE", type="string", length=11, nullable=true)
*/
private $reste;
/**
* #var string|null
*
* #ORM\Column(name="RESTEF", type="string", length=11, nullable=true)
*/
private $restef;
}
when trying to debug this issue, i found out that the Annotation Driver reader's cache is empty
i've added somme "echo" in the AnnotationDriver::loadMetaDataForClass
echo 'allClassName'.$this->getAllClassNames();
echo 'allPaths'.$this->getPaths();
returns an empty array
$classAnnotations = $this->reader->getClassAnnotations($class);
is also empty
thank you very much for you help