Using Doctrine ORM with external Database Connection

[polymed]

Hi guys,

since I added a new database configuration, I get the following error. Does anyone have any ideas?

config.yml

doctrine:
  dbal:
    connections:
        ....my_external_config

bin/console pimcore:migrations:status

In PimcoreMigrationsConfiguration.php line 122: Return value of Pimcore\Migrations\Command\StatusCommand::getConnection() must implement interface Pimcore\Db\ConnectionInterface, instance of Doctrine\DBAL\Connection returned

Best regards