How to enable debug mode in Symfony?

@cortez.connelly 

To enable debug mode in a Symfony application, you can use the following steps:

1. Open the app.php or app_dev.php file in the web directory of your Symfony application.
2. Find the following line of code:

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$kernel = new AppKernel('prod', false);

1. Replace prod with dev and false with true, so that the line of code looks like this:

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$kernel = new AppKernel('dev', true);

This will enable debug mode for your application.

Note: If you are using the app.php file, you will need to manually clear the cache after making this change. You can do this by running the php bin/console cache:clear command.