The problem

Clean install of Symfony 2.8 throws ClassNotFoundException on Profiler's Router tab due to missing import.

Error message

Fatal error: Class 'Symfony\Bundle\WebProfilerBundle\Controller\Request' not found

Location: vendor/symfony/symfony/src/Symfony/Bundle/WebProfilerBundle/Controller/RouterController.php:86

This has been fixed in symfony/web-profiler-bundle@ba91532 but the fix isn't available yet in the clean Symfony installation.

Steps to reproduce

Download Symfony installer:
$ sudo curl -LsS https://symfony.com/installer -o /usr/local/bin/symfony

Create new project using 2.8 LTS version:
$ /usr/local/bin/symfony new my_project 2.8

Change your curent directory to my_project:
$ cd my_project

Run PHP built-in web-server:
$ php app/console server:run

Using your browser, go to localhost:8000.
Click on the profiler link in the bottom right, and then click to Routing in the left sidebar.
An exception will be thrown.

Environment

OS: Ubuntu 14.04
PHP version: 5.6.20
Symfony: 2.8.4