Fatal error: Uncaught Error: Class 'Sonata\FormatterBundle\Extension\BaseExtension' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/formatter-bundle/Extension/GistExtension.php:16 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/formatter-bundle/Extension/GistExtension.php on line 16