Fatal error: Uncaught Error: Class "phpbb\db\migration\migration" not found in /usr/local/www/dctalk/data/forum/ext/vse/topicpreview/migrations/v1xx/release_1_0_6_schema.php:13 Stack trace: #0 {main} thrown in /usr/local/www/dctalk/data/forum/ext/vse/topicpreview/migrations/v1xx/release_1_0_6_schema.php on line 13