Fatal error: Uncaught Error: Interface 'Sonata\BlockBundle\Block\BlockLoaderInterface' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Block/BlockLoaderChain.php:16 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Block/BlockLoaderChain.php on line 16