Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/cooplafobq/newplanning/vendor/symfony/assetic-bundle/DependencyInjection/AsseticExtension.php:27 Stack trace: #0 {main} thrown in /home/cooplafobq/newplanning/vendor/symfony/assetic-bundle/DependencyInjection/AsseticExtension.php on line 27