How do I redirect to my site's homepage after my site times-out?

问题

Without modifying the Symfony code, I want my site to automatically redirect the user to my site's homepage and display a message that the user's session has timed out. Currently, when the time-out occurs the user's browser is automatically redirected to a confusing Symfony error that says:

Cannot redirect to an empty URL. 500 Internal Server Error - InvalidArgumentException

Stack Trace 1. in vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/RedirectResponse.php at line 76 - public function setTargetUrl($url) { if (empty($url)) { throw new \InvalidArgumentException('Cannot redirect to an empty URL.'); } $this->targetUrl = $url;

2. at RedirectResponse ->setTargetUrl ('') in vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/RedirectResponse.php at line 39

3. at RedirectResponse ->__construct ('', '302') in vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php at line 82

4. at Controller ->redirect ('') in src/AppBundle/Controller/BreakinOutBoardController.php at line 5436 +

5. at XXXXXXXController ->myVideosAction (null)

6. at call_user_func_array (array(object(XXXXXXXXController), 'myVideosAction'), array(null)) in vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php at line 142

7. at HttpKernel ->handleRaw (object(Request), '1') in vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php at line 62

8. at HttpKernel ->handle (object(Request), '1', true) in vendor/symfony/symfony/src/Symfony/Component/HttpKernel/DependencyInjection/ContainerAwareHttpKernel.php at line 67

9. at ContainerAwareHttpKernel ->handle (object(Request), '1', true) in vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php at line 183

10. at Kernel ->handle (object(Request)) in web/app_dev.php at line 31

Logs - 1 error

1. INFO - Matched route "app_breakinoutboard_myvideos".

2. INFO - Populated the TokenStorage with an anonymous Token.

3. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\DebugHandlersListener::configure".

4. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\ProfilerListener::onKernelRequest".

5. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\ValidateRequestListener::onKernelRequest".

6. DEBUG - Notified event "kernel.request" to listener "Symfony\Bundle\FrameworkBundle\EventListener\SessionListener::onKernelRequest".

7. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\FragmentListener::onKernelRequest".

8. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\RouterListener::onKernelRequest".

9. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleListener::onKernelRequest".

10. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\TranslatorListener::onKernelRequest".

11. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\Security\Http\Firewall::onKernelRequest".

12. DEBUG - Notified event "kernel.controller" to listener "Symfony\Bundle\FrameworkBundle\DataCollector\RouterDataCollector::onKernelController".

13. DEBUG - Notified event "kernel.controller" to listener "Symfony\Component\HttpKernel\DataCollector\RequestDataCollector::onKernelController".

14. DEBUG - Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ControllerListener::onKernelController".

15. DEBUG - Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ParamConverterListener::onKernelController".

16. DEBUG - Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\HttpCacheListener::onKernelController".

17. DEBUG - Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\SecurityListener::onKernelController".

18. DEBUG - Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener::onKernelController".

19. INFO - The "request" service is deprecated and will be removed in 3.0. Add a typehint for Symfony\Component\HttpFoundation\Request to your controller parameters to retrieve the request instead.

20. INFO - The "request" service is deprecated and will be removed in 3.0. Add a typehint for Symfony\Component\HttpFoundation\Request to your controller parameters to retrieve the request instead.

21. INFO - The "request" service is deprecated and will be removed in 3.0. Add a typehint for Symfony\Component\HttpFoundation\Request to your controller parameters to retrieve the request instead.

22. CRITICAL - Uncaught PHP Exception InvalidArgumentException: "Cannot redirect to an empty URL." at /var/www/vhosts/symfony2/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/RedirectResponse.php line 76

23. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\DebugHandlersListener::configure".

24. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\ProfilerListener::onKernelRequest".

25. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\ValidateRequestListener::onKernelRequest".

26. DEBUG - Notified event "kernel.request" to listener "Symfony\Bundle\FrameworkBundle\EventListener\SessionListener::onKernelRequest".

27. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\FragmentListener::onKernelRequest".

28. DEBUG - Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\RouterListener::onKernelRequest".

来源：https://stackoverflow.com/questions/56625363/how-do-i-redirect-to-my-sites-homepage-after-my-site-times-out