Fatal error: Uncaught Error: Interface 'Symfony\Component\Templating\Helper\HelperInterface' not found in /home/lafaamicps/www/symfony/vendor/knplabs/knp-markdown-bundle/Knp/Bundle/MarkdownBundle/Helper/MarkdownHelper.php:8 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/knplabs/knp-markdown-bundle/Knp/Bundle/MarkdownBundle/Helper/MarkdownHelper.php on line 8