Fatal error: Uncaught Error: Interface 'Sonata\BlockBundle\Block\BlockContextManagerInterface' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Block/BlockContextManager.php:21 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Block/BlockContextManager.php on line 21