Fatal error: Uncaught Error: Class "phpbb\db\migration\container_aware_migration" not found in /usr/local/www/dctalk/data/forum/ext/phpbb/mediaembed/migrations/m1_install_data.php:16 Stack trace: #0 {main} thrown in /usr/local/www/dctalk/data/forum/ext/phpbb/mediaembed/migrations/m1_install_data.php on line 16