maker.yml generating error with composer install

[Giuscar]

Hello,

I configured the symfony security on Pimcore because I need to implement an Oauth2.0 SSO client with OpendID Connect. I succeeded in configuring everything, but everytime I re-launch the "composer install" I get the following error:

I defined the route of this file in the config.yml and added $collection>addBundle(new\Symfony\Bundle\MakerBundle\MakerBundle(), 0, ['dev']); into the AppKernel.php

The maker.yml contains the following content:

maker:
    root_namespace: 'AppBundle'

I need to set up the root_namespace because I need to install the UserProvider and the GuardAuthenticator in the bundle "AppBundle".. Symfony seems to install everything into the App bundle by default, so you need to define the root_namespace..

Do you have any ideas why this is happening?

Thanks for your help.
Regards,
Giuseppe.