我有以下代码：
File "/usr/lib/python3/dist-packages/PIL/Image.py", line 528, in __getattr__
raise AttributeError(name)
AttributeError: close
它在本地计算机上运行完美，但在服务器上它会引发以下异常：
Participant class
/**
* @ORM\ManyToOne(targetEntity="KKB\TestBundle\Entity\Event", inversedBy="participants")
* @ORM\JoinColumn(name="event_id", referencedColumnName="id", nullable=false)
*/
private $event;
Event class
/**
* @ORM\OneToMany(targetEntity="KKB\TestBundle\Entity\Participant", mappedBy="event", cascade={"persist"})
*/
private $participants;
class EventRepository extends \Doctrine\ORM\EntityRepository
{
public function getEventList($userId)
{
$query = $this->createQueryBuilder('e');
$subquery = $this->createQueryBuilder('se');
$subquery
->leftJoin('se.participants', 'p')
->where('p.user = :userId')
;
return $query->where($query->expr()->notIn('e.id', $subquery->getDQL()))
->setParameter('userId', $userId)
;
}
}
我使用相同的PIL版本，但为什么没有定义close（）方法？