Fatal error: Uncaught Error: Class 'Sonata\AdminBundle\Filter\Filter' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/admin-bundle/Tests/Fixtures/Filter/FooFilter.php:8 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/admin-bundle/Tests/Fixtures/Filter/FooFilter.php on line 8