Symfony Undefined namespace

Question

I am seeing namespace errors all over the place and I am not sure why.

For exampe I have: use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route; and Configuration is in red and the error reads:

Undefined namespace Configuration less... (Ctrl+F1) 
Referenced namespace is not found.

How do I fix this?

Confirm you have files in your vendor folder, if not run composer install to add them — JimL
– JimL, Commented May 22, 2016 at 5:12
I noticed that it did not install my vendor folder locally. I am using a remote server for my local environment. I am going to download the vendor folder to my local machine and see if that helps. — iamthestreets
– iamthestreets, Commented May 23, 2016 at 15:08

Marco Albarelli · Accepted Answer · 2016-05-23 09:17:35Z

5

Since you say "Configuration is in red" I assume the problem you are experiencing is related to the IDE

If you are using PHPStorm there's a specific Symfony plugin that handle all the namespacing pretty much automatically, as long as your setup is standard. By standard I mean a project dir containing the app/ src/ web/ ... dirs (if you're using the 2.x Symfony dir layout)

This link will tell you everything you need, in great detail

answered May 23, 2016 at 9:17

Marco Albarelli

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Oscar · Accepted Answer · 2022-01-06 09:39:56Z

1

It may be your .idea folder which is corrupted. Close your project, delete the .idea folder and restart the IDE. It worked for me.

answered Jan 6, 2022 at 9:39

Oscar

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