clarkwinkelmann Yes.
flarum.ERROR: PDOException: SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint in /www/wwwroot/mysite.com/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:112
Next Doctrine\DBAL\Driver\PDO\Exception: SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint in /www/wwwroot/mysite.com/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDO/Exception.php:18
Next Illuminate\Database\QueryException: SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint (SQL: create table `conversations` (`id` int unsigned not null auto_increment primary key, `total_messages` int not null, `created_at` timestamp null, `updated_at` timestamp null) default character set utf8mb4 collate 'utf8mb4_unicode_ci' engine = InnoDB) in /www/wwwroot/mysite.com/vendor/illuminate/database/Connection.php:692
The first time I enable this extension, it says "table conversation has already existed", and i deleted table conversation and conversation_id without foreign key checks. And then, this error occrued.