Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\ConfigurationInterface' not found in /home/Filipie/public_html/mikolgallery/forum/phpBB3/phpbb/di/extension/container_configuration.php:19 Stack trace: #0 {main} thrown in /home/Filipie/public_html/mikolgallery/forum/phpBB3/phpbb/di/extension/container_configuration.php on line 19