Fatal error: Uncaught InvalidArgumentException: Cannot redirect to an empty URL. in /h/6vkusovby/htdocs/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/RedirectResponse.php:80 Stack trace: #0 /h/6vkusovby/htdocs/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/RedirectResponse.php(39): Symfony\Component\HttpFoundation\RedirectResponse->setTargetUrl(NULL) #1 /h/6vkusovby/htdocs/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php(88): Symfony\Component\HttpFoundation\RedirectResponse->__construct(NULL, 302) #2 /h/6vkusovby/htdocs/src/AppBundle/Controller/CityController.php(25): Symfony\Bundle\FrameworkBundle\Controller\Controller->redirect(NULL) #3 [internal function]: AppBundle\Controller\CityController->setCitySessio('2', Object(Symfony\Component\HttpFoundation\Request)) #4 /h/6vkusovby/htdocs/var/cache/prod/classes.php(5324): call_user_func_array(Array, Array) #5 /h/6vkusovby/htdocs/var/cache/prod/classes.php(5279): Symfony\Component\HttpKernel\HttpKernel->handleRaw( in /h/6vkusovby/htdocs/app/Resources/views/base.html.twig on line 9