Fatal error: Uncaught Error: Interface "Sonata\BlockBundle\Block\BlockLoaderInterface" not found in /home/flighto/e-commerce/vendor/sonata-project/block-bundle/src/Block/BlockLoaderChain.php:19 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sonata-project/block-bundle/src/Block/BlockLoaderChain.php on line 19