The bundles bugs : Doctrine\Common\Collections\ArrayCollection' was not found in the chain configured namespaces

[ahmed-bhs]

Hi,some helpe here please :

It seems that the bundles bugs. first i have a user entity related to the group entity ,as already defined in fosuerbundle , the exception says :

The class 'Doctrine\Common\Collections\ArrayCollection' was not found in the chain configured namespaces AppBundle\Entity, FOS\UserBundle\Model

But the file( Collections\ArrayCollection.php ) alreday exist ...even i cleared the cache but same problém , and when i go to a private browser, everything is fine until i filter or add new users ,

in vendor\doctrine\common\lib\Doctrine\Common\Persistence\Mapping\MappingException.php at line 37
*/

    public static function classNotFoundInNamespaces($className, $namespaces)
    {
        return new self("The class '" . $className . "' was not found in the ".
            "chain configured namespaces " . implode(", ", $namespaces));  //here the probleme
    }

at UnitOfWork ->doMerge (object(ArrayCollection), array())
in vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php at line 1786

{
      $visited = array();
      return $this->doMerge($entity, $visited); //here the probleme
  }
  /**

at UserController ->filter (object(QueryBuilder), object(Request))
in src\AppBundle\Controller\UserController.php at line 39

    $queryBuilder = $em->getRepository('AppBundle:User')->createQueryBuilder('e');
     
   
   list($filterForm, $queryBuilder) = $this->filter($queryBuilder, $request); //here the problém
   $arr= $this->paginator($queryBuilder, $request); 

at call_user_func_array (array(object(UserController), 'indexAction'), array(object(Request)))
in vendor\symfony\symfony\src\Symfony\Component\HttpKernel\HttpKernel.php at line 153

$arguments = $event->getArguments();
      // call controller
      $response = call_user_func_array($controller, $arguments); //here the probléme
      // view
      if (!$response instanceof Response) {