Why After first load symfony stop working? - symfony

Question

I'm new to symfony
and when installation finish the welcome page work correctly but when i'm refreshing the page the load doesnt finish!
EDIT :
For my server configuration i juste use the "php bin\console sever:run" commande to launch my project.
And I add the content of dev log file :
[2019-02-14 00:09:05] php.DEBUG: Warning: fsockopen(): unable to connect to 127.0.0.1:8000 (Une tentative de connexion a échoué car le parti connecté n’a pas répondu convenablement au-delà d’une certaine durée ou une connexion établie a échoué car l’hôte de connexion n’a pas répondu. ) {"exception":"[object] (Symfony\Component\Debug\Exception\SilencedErrorContext: {\"severity\":2,\"file\":\"C:\\Mes Sites Web\\awema\\awema\\vendor\\symfony\\web-server-bundle\\WebServerConfig.php\",\"line\":139,\"trace\":[{\"file\":\"C:\\Mes Sites Web\\awema\\awema\\vendor\\symfony\\web-server-bundle\\WebServerConfig.php\",\"line\":54,\"function\":\"findBestPort\",\"class\":\"Symfony\\Bundle\\WebServerBundle\\WebServerConfig\",\"type\":\"->\"}],\"count\":1})"} []
[2019-02-14 00:09:17] request.ERROR: Uncaught PHP Exception Symfony\Component\HttpKernel\Exception\NotFoundHttpException: "No route found for "GET /"" at C:\Mes Sites Web\awema\awema\vendor\symfony\http-kernel\EventListener\RouterListener.php line 139 {"exception":"[object] (Symfony\Component\HttpKernel\Exception\NotFoundHttpException(code: 0): No route found for \"GET /\" at C:\Mes Sites Web\awema\awema\vendor\symfony\http-kernel\EventListener\RouterListener.php:139, Symfony\Component\Routing\Exception\NoConfigurationException(code: 0): at C:\Mes Sites Web\awema\awema\vendor\symfony\routing\Matcher\Dumper\PhpMatcherTrait.php:172)"} []
[2019-02-14 00:09:18] request.INFO: Matched route "_wdt". {"route":"_wdt","route_parameters":{"_route":"_wdt","_controller":"web_profiler.controller.profiler::toolbarAction","token":"6b922e"},"request_uri":"http://127.0.0.1:8000/_wdt/6b922e","method":"GET"} []

Answer 1

I experienced the exact same issue (Windows, Symfony 4.4.2, php 7.1.3)
I was using the WebserverBundle which gives a notice :
WebserverBundle is deprecated since Symfony 4.4. The new Symfony local
server has more features, you can use it instead
If you run for instance
symfony server:start
This will propose the installation of the new symfony local server, which solved this infinite loop problem for me.