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Recommend to install TwigBundle in the Customize Error Pages article #10934

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Recommend to install TwigBundle in the Customize Error Pages article #10934

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9 changes: 9 additions & 0 deletions controller/error_pages.rst
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Expand Up @@ -9,6 +9,14 @@ In Symfony applications, all errors are treated as exceptions, no matter if they
are just a 404 Not Found error or a fatal error triggered by throwing some
exception in your code.

If your app has the `TwigBundle`_ installed, a special controller handles these
exceptions. This controller displays debug information for errors and allows to
customize error pages, so run this command to make sure the bundle is installed:

.. code-block:: terminal

$ composer require twig

In the :doc:`development environment </configuration/environments>`,
Symfony catches all the exceptions and displays a special **exception page**
with lots of debug information to help you discover the root problem:
Expand Down Expand Up @@ -351,6 +359,7 @@ time and again, you can have just one (or several) listeners deal with them.
and takes measures like redirecting the user to the login page, logging them
out and other things.

.. _`TwigBundle`: https://github.com/symfony/twig-bundle
.. _`WebfactoryExceptionsBundle`: https://github.com/webfactory/exceptions-bundle
.. _`Symfony Standard Edition`: https://github.com/symfony/symfony-standard/
.. _`ExceptionListener`: https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Security/Http/Firewall/ExceptionListener.php