Namespace problems on Symfony3 upgrade

Question

I'm currently trying to upgrade my Symfony2 application to Symfony3. I have a SecurityController that overwrites a FOSUserBundle\SecurityController:

namespace Acme\MyBundle\Controller;

use Symfony\Component\DependencyInjection\ContainerAware;

class SecurityController extends ContainerAware
{
    // ...
}

But I get a ClassNotFoundException:

Attempted to load class "ContainerAware" from namespace "Symfony\Component\DependencyInjection".
Did you forget a "use" statement for another namespace?

Are there any changes that I cannot find in the upgrade notes. Can someone point me to a way to come over this?

Answer 1

Due to the changes from this PR, ContainerAware has been deprecated in 2.8 and removed in 3.0 in favor of ContainerAwareTrait