Fatal error: Uncaught Error: Class "Symfony\Component\BrowserKit\AbstractBrowser" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\http-kernel\HttpKernelBrowser.php:31 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\http-kernel\HttpKernelBrowser.php on line 31