doctrine: dbal: url: '%env(resolve:DATABASE_URL)%' # IMPORTANT: You MUST configure your server version, # either here or in the DATABASE_URL env var (see .env file) #server_version: '13' orm: auto_generate_proxy_classes: true naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware auto_mapping: true mappings: App: is_bundle: false type: annotation dir: '%kernel.project_dir%/src/Entity' prefix: 'App\Entity' alias: App gedmo_tree: type: annotation prefix: Gedmo\Tree\Entity dir: "%kernel.project_dir%/vendor/gedmo/doctrine-extensions/src/Tree/Entity" alias: GedmoTree # (optional) it will default to the name set for the mapping is_bundle: false