Error 500 Internal Server Error

GET https://www.tennisfinder.atts-systems.com/languages/set/default/language/1

Forwarded to ErrorController (eb13de)

Exceptions

Symfony\Bundle\FrameworkBundle\Controller\AbstractController::redirect(): Argument #1 ($url) must be of type string, null given, called in /var/www/html/tennisfinder/src/Controller/LanguagesController.php on line 183

TypeError

  1.     /**
  2.      * Returns a RedirectResponse to the given URL.
  3.      *
  4.      * @param int $status The HTTP status code (302 "Found" by default)
  5.      */
  6.     protected function redirect(string $urlint $status 302): RedirectResponse
  7.     {
  8.         return new RedirectResponse($url$status);
  9.     }
  10.     /**
AbstractController->redirect() in src/Controller/LanguagesController.php (line 183)
  1.             $user->setDefaultLanguage($languages);
  2.             $entityManager->persist($user);
  3.             $entityManager->flush();
  4.         }
  5.         $session->set('selected_language'$languages->getLanguage());
  6.         return $this->redirect($request->headers->get('referer'));
  7.     }
  8.     /**
  9.      * @Route("/change_ranking/{change}/{id}", name="language_change_ranking", methods={"GET", "POST"})
in vendor/symfony/http-kernel/HttpKernel.php -> setDefaultLanguage (line 181)
  1.         $this->dispatcher->dispatch($eventKernelEvents::CONTROLLER_ARGUMENTS);
  2.         $controller $event->getController();
  3.         $arguments $event->getArguments();
  4.         // call controller
  5.         $response $controller(...$arguments);
  6.         // view
  7.         if (!$response instanceof Response) {
  8.             $event = new ViewEvent($this$request$type$response$event);
  9.             $this->dispatcher->dispatch($eventKernelEvents::VIEW);
  1.         $request->headers->set('X-Php-Ob-Level', (string) ob_get_level());
  2.         $this->requestStack->push($request);
  3.         $response null;
  4.         try {
  5.             return $response $this->handleRaw($request$type);
  6.         } catch (\Throwable $e) {
  7.             if ($e instanceof \Error && !$this->handleAllThrowables) {
  8.                 throw $e;
  9.             }
  1.         $this->boot();
  2.         ++$this->requestStackSize;
  3.         $this->resetServices true;
  4.         try {
  5.             return $this->getHttpKernel()->handle($request$type$catch);
  6.         } finally {
  7.             --$this->requestStackSize;
  8.         }
  9.     }
Kernel->handle() in public/index.php (line 20)
  1.     Debug::enable();
  2. }
  3. $kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
  4. $request Request::createFromGlobals();
  5. $response $kernel->handle($request);
  6. $response->send();
  7. $kernel->terminate($request$response);