Silex routing not found

I am using Silex for the first time. Everything works fine, developing locally. Once you have uploaded everything to the production server, parameterized routes no longer work.

Do you have any ideas? Am I losing the production configuration somewhere?
Am I missing file permissions somewhere?

I get these two exceptions:

NotFoundHttpException: No route found for "GET /prevendita/hello/sadfasdf"
in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/RouterListener.php line 92
  at RouterListener->onKernelRequest(object(GetResponseEvent))
  at call_user_func(array(object(RouterListener), 'onKernelRequest'), object(GetResponseEvent)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/EventDispatcher.php line 164
  at EventDispatcher->doDispatch(array(array(object(Application), 'onEarlyKernelRequest'), array(object(SessionServiceProvider), 'onEarlyKernelRequest'), array(object(RouterListener), 'onKernelRequest'), array(object(LocaleListener), 'onKernelRequest'), array(object(Application), 'onKernelRequest')), 'kernel.request', object(GetResponseEvent)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/EventDispatcher.php line 53
  at EventDispatcher->dispatch('kernel.request', object(GetResponseEvent)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php line 110
  at HttpKernel->handleRaw(object(Request), '1') in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php line 73
  at HttpKernel->handle(object(Request), '1', true) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/silex/silex/src/Silex/Application.php line 509
  at Application->handle(object(Request)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/silex/silex/src/Silex/Application.php line 484
  at Application->run() in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/web/index.php line 49

and

ResourceNotFoundException:
in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/routing/Symfony/Component/Routing/Matcher/UrlMatcher.php line 81
  at UrlMatcher->match('/prevendita/hello/sadfasdf') in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/routing/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php line 30
  at RedirectableUrlMatcher->match('/prevendita/hello/sadfasdf') in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/silex/silex/src/Silex/LazyUrlMatcher.php line 51
  at LazyUrlMatcher->match('/prevendita/hello/sadfasdf') in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/RouterListener.php line 78
  at RouterListener->onKernelRequest(object(GetResponseEvent))
  at call_user_func(array(object(RouterListener), 'onKernelRequest'), object(GetResponseEvent)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/EventDispatcher.php line 164
  at EventDispatcher->doDispatch(array(array(object(Application), 'onEarlyKernelRequest'), array(object(SessionServiceProvider), 'onEarlyKernelRequest'), array(object(RouterListener), 'onKernelRequest'), array(object(LocaleListener), 'onKernelRequest'), array(object(Application), 'onKernelRequest')), 'kernel.request', object(GetResponseEvent)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/EventDispatcher.php line 53
  at EventDispatcher->dispatch('kernel.request', object(GetResponseEvent)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php line 110
  at HttpKernel->handleRaw(object(Request), '1') in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php line 73
  at HttpKernel->handle(object(Request), '1', true) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/silex/silex/src/Silex/Application.php line 509
  at Application->handle(object(Request)) in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/vendor/silex/silex/src/Silex/Application.php line 484
  at Application->run() in /var/www/vhosts/teatrodellamemoria.it/httpdocs/assets/modules/prevendita/web/index.php line 49

This is the code:

<?php
require_once __DIR__.'/../vendor/autoload.php';

use Teatro\Models\Reservation;
use Teatro\Models\ReservationsSeat;
use Symfony\Component\Validator\Constraints;
use Symfony\Component\Form\FormError;

$app = new Silex\Application();
$app['debug'] = true;

$app->register(new Silex\Provider\TwigServiceProvider(), array(
    'twig.path' => __DIR__.'/../views',
));
$app->register(
    new Silex\Provider\UrlGeneratorServiceProvider()
);
$app->register(
    new Silex\Provider\SessionServiceProvider(), array(
//        'session.storage.options' => array('name' => 'test')
    )
);
$app->register(
    new Silex\Provider\FormServiceProvider()
);
$app->register(
    new Silex\Provider\ValidatorServiceProvider()
);
$app->register(new Silex\Provider\TranslationServiceProvider(), array(
    'translator.messages' => array(),
));
$app->register(
    new Silex\Provider\SwiftmailerServiceProvider()
);

$app->get('/prevendita/hello/{name}/', function ($name) use ($app) {
    return "Hello $name!";
})->bind('hello_name');

$app->get('/prevendita/hello', function () use ($app) {
    return "Hello!";
})->bind('hello');

$app->run();

Development Server - PHP 5.4 Embedded Web Server Production Server PHP 5.3 CentOS

. Htaccess files are basically the same. In the env application, the silex application is in a subfolder of the root of the let say / prevendita document, so I added

RewriteRule ^prevendita /prevendita/web/index.php [L]

redirect any request starting with / prevendita to my silex application