Question

So far, my “TwigBundle” custom error404.html.twig page displays correctly on production mode when I throw:

$this->createNotFoundException('whatevs');

However, when a “NotFoundHttpException” is thrown by Symfony (such as whenever a route is not found), the “no route found” page displays indeed on app_dev, mentioning “404 Not Found”, but on production mode it just displays a blank page…

Which does not seem normal since, according to the Symfony documentation: “The createNotFoundException() method creates a special NotFoundHttpException object, which ultimately triggers a 404 HTTP response inside Symfony.”

Then why don’t I get the same behavior? Is there something I am missing?

I am using the master branch.

EDIT: Here is my security.yml file, I am using FOSUserBundle and FOSFacebookBundle:

security:
providers:
    chain_provider:
        chain:
            providers: [fos_userbundle, my_fos_facebook_provider]
    fos_userbundle:
        id: fos_user.user_manager
    my_fos_facebook_provider:
        id: my.facebook.user

encoders:
    "FOS\UserBundle\Model\UserInterface": sha512

firewalls:
    public:
        pattern:   ^/
        fos_facebook:
            app_url: "http://apps.facebook.com/***/"
            server_url: "http://localhost/facebookApp/"
            login_path: /login
            check_path: /checkFb
            default_target_path: /
            provider: chain_provider
        form_login:
            login_path: /login
            check_path: /login_check
            provider: chain_provider
            remember_me:   true
            csrf_provider: form.csrf_provider
        remember_me:
            key:           %secret%
        anonymous: true
        logout: true
    login:                                           
        pattern:   ^/(login$|register|resetting)  
        anonymous: true

role_hierarchy:
    ROLE_ADMIN:       ROLE_ADMIN
    ROLE_SUPER_ADMIN: [ROLE_ADMIN, ROLE_ALOOW_TO_SWITCH]
    ROLE_USER:        ROLE_USER

access_control:
    - { path: ^/, role: [IS_AUTHENTICATED_ANONYMOUSLY] }
    - { path: ^/secured/, role: [IS_AUTHENTICATED_FULLY] } # This is the route secured with fos_facebook
    - { path: ^/facebook/,           role: [ROLE_FACEBOOK] }

Answer 1

Had the same problem. See https://github.com/symfony/symfony/issues/5320 You’re probably calling is_granted on the errorpage or layout.html.twig. Read the answer of Stof how to solve this.