执行sql查询Symfony2错误

我有一个问题，我插入查询symfony2，见此图:http://snapplr.com/snap/yt84

当我尝试创建一个新的画廊实体(上传一个图片文件在我的服务器上)，我得到这个错误，

但是当我尝试更新一个实体，我已经在我的数据库中添加了手动，它的工作。

这是我的实体

<?php
namespace Core'PageBundle'Entity;
use Doctrine'ORM'Mapping as ORM;
use Knp'DoctrineBehaviors'Model as ORMBehaviors;
use Symfony'Component'Validator'Constraints as Assert;
/**
 * media
 *
 * @ORM'Table(name="page_gallery")
 * @ORM'Entity(repositoryClass="Core'PageBundle'Repository'GalleryRepository")
 * @ORM'HasLifecycleCallbacks
 */
class Gallery
{
    use ORMBehaviors'Translatable'Translatable;
    public function __call($method, $arguments)
    {
        return 'Symfony'Component'PropertyAccess'PropertyAccess::createPropertyAccessor()->getValue($this->translate(), $method);
    }
    /**
     * @var integer
     *
     * @ORM'Column(name="id", type="integer")
     * @ORM'Id
     * @ORM'GeneratedValue(strategy="AUTO")
     */
    private $id;
    /**
     * @ORM'Column(type="string", length=255, nullable=true)
     */
    private $path;
    /**
     * @Assert'Image(maxSize="3096k", maxSizeMessage="L'image est trop lourde ({{ size }} ko). La taille maximum autorisée est de {{ limit }} ko.")
     */
    private $file;
    /**
     * 
     * @ORM'ManyToOne(targetEntity="Core'PageBundle'Entity'Page", cascade={"persist"})
     * @ORM'JoinColumn(nullable=true)
     */
    private $page;
    /**
     * @var integer $order
     * @ORM'Column(name="order", type="integer", nullable=true)
     */
    private $order;
    /**
     * Get id
     *
     * @return integer 
     */
    public function getId()
    {
        return $this->id;
    }
    public function getUploadRootDir(){
        return __DIR__.'/../../../../web/uploads/page/gallery';
    }
    public function getAbsolutePath(){
        return null === $this->path ? null : $this->getUploadRootDir().'/'.$this->path;
    }
    /**
    *@ORM'PrePersist()
    *@ORM'PreUpdate()
    */
    public function preUpload(){
        $this->tempFile = $this->getAbsolutePath();
        $this->oldFile = $this->getPath();
            if(null != $this->file){
                $this->path = sha1(uniqid(mt_rand(),true)).'.'.$this->file->guessExtension();
            }
    }
    /**
    *@ORM'PostPersist()
    *@ORM'PostUpdate()
    */
    public function upload(){
        if(null != $this->file){
            $this->file->move($this->getUploadRootDir(),$this->path);
            unset($this->file);
        }
        if($this->oldFile != null){
            unlink($this->tempFile);
        }
    }
    /**
    *@ORM'PreRemove()
    */
    public function preRemoveUpload(){
        $this->tempFile = $this->getAbsolutePath();
    }
    /**
    *@ORM'PostRemove()
    */
    public function removeUpload(){
        if(file_exists($this->tempFile)){
            unlink($this->tempFile);
        }
    }
    public function getPath(){
        return $this->path;
    }
    public function __toString(){
        return $this->getName();
    }
    /**
     * Set path
     *
     * @param string $path
     * @return Media
     */
    public function setPath($path)
    {
        $this->path = $path;
        return $this;
    }
    /**
     * Set page
     *
     * @param 'Core'PageBundle'Entity'Page $page
     * @return Gallery
     */
    public function setPage('Core'PageBundle'Entity'Page $page = null)
    {
        $this->page = $page;
        return $this;
    }
    /**
     * Get page
     *
     * @return 'Core'PageBundle'Entity'Page 
     */
    public function getPage()
    {
        return $this->page;
    }
    /**
     * Set order
     *
     * @param integer $order
     * @return Gallery
     */
    public function setOrder($order)
    {
        $this->order = $order;
        return $this;
    }
    /**
     * Get order
     *
     * @return integer 
     */
    public function getOrder()
    {
        return $this->order;
    }
    public function setFile($file)
    {
        $this->file = $file;
 
        // On vérifie si on avait déjà un fichier pour cette entité
        if (null !== $this->path) {
            // On sauvegarde l'extension du fichier pour le supprimer plus tard
            $this->tempFile = $this->path;
 
            // On réinitialise les valeurs des attributs url et alt
            $this->path = null;
        }
    }
 
    public function getFile()
    {
        return $this->file;
    }
}

这是控制器的动作:

public function createGalleryAction(Request $request, $slug){
        $entity = new Gallery();
        $em = $this->getDoctrine()->getManager();
        $page = $em->getRepository('PageBundle:Page')->findOneBySlug($slug);
        $page = $em->getRepository('PageBundle:Page')->find($page->getId());
        $entity->setPage($page);
        $form = $this->createForm(new GalleryType(), $entity);
        $form->bind($request);
        if ($form->isValid()) {
            $em->persist($entity);
            $em->flush();
            $this->get('session')->getFlashBag()->add('success', 'L''image a été crée !');
            if(isset($_POST['create_new'])){
                return $this->redirect($this->generateUrl('pa_gallery_new', array('slug'                                                        => $slug)));
            }else{
                return $this->redirect($this->generateUrl('pa_gallery_show', array('slug'                                                        => $slug) ));
            }  
        }
        return $this->render('::crudGenerator/new.html.twig', array(
            'entity' => $entity,
            'form'   => $form->createView(),
            'actionList'            => $this->generateUrl('pa'),
            'actionGalleryList'     => $this->generateUrl('pa_gallery_show', array('slug'   => $slug)),
            'actionCreate'      => $this->generateUrl('pa_gallery_create', array('slug'                                                        => $slug)),
            'name'                  => 'page',
            'subName'               => 'galerie photos',
        ));
    }