Mapping exception after install SonataMediaBundle

After reads and try several things I found where the error was. In my doctrine config I have:

orm:    auto_generate_proxy_classes: "%kernel.debug%"#   auto_mapping: true    entity_managers:        default:            mappings:                ApplicationSonataMediaBundle: ~                SonataMediaBundle: ~

By removing the auto_mapping clause, I no longer register UserBundle in the doctrine’s mapping directories. Hence it cannot find your User entity. So solution was either uncomment the auto_mapping: true from your config and comment the entity_manager.default.mappings part, or explicitly specify your User bundle in the section. So I pick the first one and my code looks like this now:

orm:    auto_generate_proxy_classes: "%kernel.debug%"    auto_mapping: true#    entity_managers:#        default:#            mappings:#                ApplicationSonataMediaBundle: ~#                SonataMediaBundle: ~

remove it again and run following command, php app/console sonata:easy-extends:generate --dest=src SonataMediaBundle... You forgot the --dest=src and just by moving the files you won't have changed all the namespaces.

I found solution where it should be:

doctrine:    orm:        auto_generate_proxy_classes: %kernel.debug%        entity_managers:            default:                auto_mapping: true                mappings:                    ApplicationSonataMediaBundle: ~                    SonataMediaBundle: ~

auto_mapping: true must be into doctrine, orm, entity_managers, default section and not into doctrine, orm.