public function checkDeploy(GetResponseEvent $event)
 {
     if (null === $this->cache || $this->cache->contains(self::CHECK_DEPLOY_KEY)) {
         return;
     }
     $clients = $this->clientRepository->countClients();
     $cities = $this->cityRepository->countCities();
     $hasDefaultClient = $this->clientRepository->findOneByUid($this->defaultClientUid) instanceof Client;
     if ($clients <= 0 || $cities <= 0 || !$hasDefaultClient) {
         $this->cache->delete(self::CHECK_DEPLOY_KEY);
         throw new \RuntimeException('Make sure you did run the populate database command.');
     } else {
         $this->cache->save(self::CHECK_DEPLOY_KEY, true);
     }
 }