Fatal error: Uncaught Error: Class 'Symfony\Bundle\FrameworkBundle\Client' not found in C:\Landaweb\webs\landaweb\backend\vendor\symfony\framework-bundle\KernelBrowser.php:19 Stack trace: #0 {main} thrown in C:\Landaweb\webs\landaweb\backend\vendor\symfony\framework-bundle\KernelBrowser.php on line 19