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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace AppBundle\Controller\Api;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use AppBundle\Entity\S3\Image;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use AppBundle\Entity\User;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use AppBundle\Exception\JsonHttpException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Bundle\FrameworkBundle\Controller\Controller;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\HttpFoundation\Request;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Routing\Annotation\Route;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Serializer\Normalizer\AbstractNormalizer;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Validator\ConstraintViolation;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Validator\ConstraintViolationList;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class UserController extends Controller  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @Route("/avatar", name="api_avatar") | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @Method({"PUT"}) | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    public function avatarAction(Request $request)  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $headers = $request->headers;  | 
            
            
                                                        
            
                                    
            
            
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                        /** @var User $user */  | 
            
            
                                                        
            
                                    
            
            
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                        $user = $this->getUser();  | 
            
            
                                                        
            
                                    
            
            
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                        $image = new Image(sprintf('user/%d/avatar', $user->getId())); | 
            
            
                                                        
            
                                    
            
            
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                        $image  | 
            
            
                                                        
            
                                    
            
            
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                            ->setContentType($headers->get('Content-Type')) | 
            
            
                                                        
            
                                    
            
            
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                            ->setContent($request->getContent());  | 
            
            
                                                        
            
                                    
            
            
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                        /** @var ConstraintViolationList $errors */  | 
            
            
                                                        
            
                                    
            
            
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                        $errors = $this->get('validator')->validate($image, null, ['Api']); | 
            
            
                                                        
            
                                    
            
            
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                        if ($errors->count()) { | 
            
            
                                                        
            
                                    
            
            
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                            $outErrors = [];  | 
            
            
                                                        
            
                                    
            
            
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                            /** @var ConstraintViolation $error */  | 
            
            
                                                        
            
                                    
            
            
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                            foreach ($errors as $error) { | 
            
            
                                                        
            
                                    
            
            
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                                $outErrors['headers'][$error->getPropertyPath()] = $error->getMessage();  | 
            
            
                                                        
            
                                    
            
            
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                            }  | 
            
            
                                                        
            
                                    
            
            
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                            throw new JsonHttpException(400, 'Bad Request', $outErrors);  | 
            
            
                                                        
            
                                    
            
            
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                        }  | 
            
            
                                                        
            
                                    
            
            
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                        $user->setImage($image);  | 
            
                            
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                        $this->getDoctrine()->getManager()->flush();  | 
            
            
                                                        
            
                                    
            
            
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                        return $this->json(['user' => $user], 201, [], [AbstractNormalizer::GROUPS => ['Short']]);  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: