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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (c) FSi sp. z o.o. <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace FSi\Bundle\AdminBundle\Admin\CRUD\Context\Request;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use FSi\Bundle\AdminBundle\Admin\Context\Request\AbstractHandler;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use FSi\Bundle\AdminBundle\Event\AdminEvent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use FSi\Bundle\AdminBundle\Event\ListEvent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use FSi\Bundle\AdminBundle\Event\ListEvents;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use FSi\Bundle\AdminBundle\Exception\RequestHandlerException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\HttpFoundation\Request;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\HttpFoundation\Response;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                class DataSourceBindParametersHandler extends AbstractHandler  | 
            
            
                                                                        
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function handleRequest(AdminEvent $event, Request $request): ?Response  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $event = $this->validateEvent($event);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($event->hasResponse()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $event->getResponse();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->eventDispatcher->dispatch(ListEvents::LIST_DATASOURCE_REQUEST_PRE_BIND, $event);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($event->hasResponse()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $event->getResponse();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $event->getDataSource()->bindParameters($request);  | 
            
                            
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                        $this->eventDispatcher->dispatch(ListEvents::LIST_DATASOURCE_REQUEST_POST_BIND, $event);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($event->hasResponse()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $event->getResponse();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return null;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    private function validateEvent(AdminEvent $event): ListEvent  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$event instanceof ListEvent) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new RequestHandlerException(sprintf('%s require ListEvent', get_class($this))); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $event;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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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: