Fatal error: Uncaught Error: Class "phpbb\db\migration\migration" not found in /usr/local/www/dctalk/data/forum/ext/vse/abbc3/migrations/v310_m2_remove_schema.php:17 Stack trace: #0 {main} thrown in /usr/local/www/dctalk/data/forum/ext/vse/abbc3/migrations/v310_m2_remove_schema.php on line 17