Fatal error: Uncaught Error: Class "Symfony\Bundle\AsseticBundle\Templating\AsseticHelper" not found in C:\xampp\htdocs\electronica\vendor\symfony\assetic-bundle\Templating\StaticAsseticHelper.php:24 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\symfony\assetic-bundle\Templating\StaticAsseticHelper.php on line 24