Symfony2: ResourceNotFoundException when using extends in a twig template

Question

I have over-ridden the exception.html.twig in the following directory:

app/Resources/TwigBundle/views/Exception

I have another twig inside

Answer 1

You're trying to generate a non-existant route in your template. Therefore the router throws the Exception.

Examine your template for route-generating calls like path() and make sure all used route-names actually exist. Clear your cache before to be sure you have the latest routes available.

you can debug your routing with the console command ...

app/console router:debug --env=prod
app/console router:debug --env=dev

.. to list all routes in your application. Further use ...

app/console router:debug route_name

for more detailed information.

Tip:

Sometimes you have routes only configured for the dev environment ( aka in routing_dev.yml ) and receive these errors in production.