Problem with Flextrine + Yaml. Error: No Metadata Classes to process

[Drake]

Hi!

I have a problem with generation orm entities from the YAML-file.
I execute this command: flextrine orm:generate-entities myfile.yml
and get error: ‘No Metadata Classes to process.’
In config file I set the driver attribute to "Doctrine\ORM\Mapping
\Driver\YamlDriver"

Do anybody know what's the problem or has an example of flextrine
+Yaml ?

Thanks