php – 您已请求合成服务(“请求”). DIC不知道如何构建此服务

You have requested a synthetic service (“request”). The DIC does not know how to construct this service.

在composer.json中添加“knplabs / knp-paginator-bundle”：“~2.5.3”后收到错误并运行更新.

public function listingAction(Request $request)
    {
        $em = $this->getDoctrine()->getManager();

        $list = $em->getRepository('AvtostilSharedBundleEntityGallery')->findAll();

        $paginator = $this->get('knp_paginator');
        $pagination = $paginator->paginate($list,$request->query->getInt('page',1)/* page number */,3/* limit per page */);
        $pagination->setUsedRoute(AvtostilSharedBundleEntityPage::GALLERY_LISTING); /* QUICK AND DIRTY */

        $data = [];
        $data['galleries'] = $pagination;
        echo "<pre>";
        DoctrineCommonUtilDebug::dump('here');
        die();
        return $this->render('AvtostilOpenBundle:Gallery:listing.html.twig',$data);
    }

转储是好的,当我删除错误happing？

in appDevDebugProjectContainer.php line 4094
at appDevDebugProjectContainer->getRequestService() in bootstrap.php.cache line 2189
at Container->get('request','2') in appDevDebugProjectContainer.php line 7503
at appDevDebugProjectContainer->synchronizeRequestService() in bootstrap.php.cache line 2125
at Container->set('request',null,'request') in bootstrap.php.cache line 3278
at ContainerAwareHttpKernel->handle(object(Request),'1',true) in bootstrap.php.cache line 2479
at Kernel->handle(object(Request)) in app_dev.php line 29