Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in /home/astechc1/public_html/vendor/helios-ag/fm-elfinder-bundle/src/DependencyInjection/Configuration.php:12 Stack trace: #0 {main} thrown in /home/astechc1/public_html/vendor/helios-ag/fm-elfinder-bundle/src/DependencyInjection/Configuration.php on line 12