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Editorial Team
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Asked: 2026-06-12T00:29:51+00:00

I have setup custom error pages to display for certain HTTP errors in the

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I have setup custom error pages to display for certain HTTP errors in the folder:

app/Resources/TwigBundle/views/Exception/

The 403 page (error403.html.twig) works and displays as expected.

The 500 page (error500.html.twig) works and displays as expected.

The 404 page (error404.html.twig) throws a 500 server error:

PHP Fatal error: Uncaught exception ‘Symfony\Component\Routing\Exception\ResourceNotFoundException’

The error is being thrown by doing an auth check to display certain menu items for users that are or aren’t authenticated:

{% if is_granted('IS_AUTHENTICATED_FULLY') %}

If I remove that check and just allow all menu items to display, the page loads the error page as expected. Again, the 403 page displays as it should and utilizes the auth checks without a problem.

I’m stuck on this one. The pages are EXACTLY the same, apart from the filename.

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1 Answer

  1. Editorial Team

    You can’t use the is_granted in a 404 page since 2.1:

    It’s mentioned in the upgrade file

    The Firewall listener is now registered after the Router listener. This means that specific Firewall URLs (like /login_check and /logout) must now have proper routes defined in your routing configuration. Also, if you have a custom 404 error page, make sure that you do not use any security related features such as is_granted on it.

    See:
    https://github.com/symfony/symfony/blob/master/UPGRADE-2.1.md#security

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