In ORMException.php line 40:
!!                                                                                 
!!    It's a requirement to specify a Metadata Driver and pass it to Doctrine\ORM  
!!    \Configuration::setMetadataDriverImpl().      

symfony/apache-pack                v1.0.1     A pack for Apache support in Symfony
symfony/asset                      v5.2.0-RC1 Symfony Asset Component
symfony/browser-kit                v5.2.0-RC1 Symfony BrowserKit Component
symfony/cache                      v5.2.0-RC1 Symfony Cache component with PSR-6, PSR-16, and tags
symfony/cache-contracts            v2.2.0     Generic abstractions related to caching
symfony/config                     v5.2.0-RC1 Symfony Config Component
symfony/console                    v5.2.0-RC1 Symfony Console Component
symfony/css-selector               v5.2.0-RC1 Symfony CssSelector Component
symfony/dependency-injection       v5.2.0-RC1 Symfony DependencyInjection Component
symfony/deprecation-contracts      v2.2.0     A generic function and convention to trigger deprecation notices
symfony/doctrine-bridge            v5.2.0-RC1 Symfony Doctrine Bridge
symfony/dom-crawler                v5.2.0-RC1 Symfony DomCrawler Component
symfony/dotenv                     v5.2.0-RC1 Registers environment variables from a .env file
symfony/error-handler              v5.2.0-RC1 Symfony ErrorHandler Component
symfony/event-dispatcher           v5.2.0-RC1 Symfony EventDispatcher Component
symfony/event-dispatcher-contracts v2.2.0     Generic abstractions related to dispatching event
symfony/expression-language        v5.2.0-RC1 Symfony ExpressionLanguage Component
symfony/filesystem                 v5.2.0-RC1 Symfony Filesystem Component
symfony/finder                     v5.2.0-RC1 Symfony Finder Component
symfony/flex                       v1.10.0    Composer plugin for Symfony
symfony/form                       v5.2.0-RC1 Symfony Form Component
symfony/framework-bundle           v5.2.0-RC1 Symfony FrameworkBundle
symfony/http-client                v5.2.0-RC1 Symfony HttpClient component
symfony/http-client-contracts      v2.3.1     Generic abstractions related to HTTP clients
symfony/http-foundation            v5.2.0-RC1 Symfony HttpFoundation Component
symfony/http-kernel                v5.2.0-RC1 Symfony HttpKernel Component
symfony/intl                       v5.2.0-RC1 A PHP replacement layer for the C intl extension that includes additional data from the ICU library.
symfony/mailer                     v5.2.0-RC1 Symfony Mailer Component
symfony/mailgun-mailer             v5.2.0-RC1 Symfony Mailgun Mailer Bridge
symfony/maker-bundle               v1.23.0    Symfony Maker helps you create empty commands, controllers, form classes, tests and more so you can forget about writing...
symfony/mime                       v5.2.0-RC1 A library to manipulate MIME messages
symfony/monolog-bridge             v5.2.0-RC1 Symfony Monolog Bridge
symfony/monolog-bundle             v3.6.0     Symfony MonologBundle
symfony/options-resolver           v5.2.0-RC1 Symfony OptionsResolver Component
symfony/orm-pack                   v1.2.0     A pack for the Doctrine ORM
symfony/phpunit-bridge             v5.2.0-RC1 Symfony PHPUnit Bridge
symfony/polyfill-intl-grapheme     v1.20.0    Symfony polyfill for intl's grapheme_* functions
symfony/polyfill-intl-icu          v1.20.0    Symfony polyfill for intl's ICU-related data and classes
symfony/polyfill-intl-idn          v1.20.0    Symfony polyfill for intl's idn_to_ascii and idn_to_utf8 functions
symfony/polyfill-intl-normalizer   v1.20.0    Symfony polyfill for intl's Normalizer class and related functions
symfony/polyfill-mbstring          v1.20.0    Symfony polyfill for the Mbstring extension
symfony/polyfill-php72             v1.20.0    Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions
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symfony/polyfill-php80             v1.20.0    Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions
symfony/polyfill-uuid              v1.20.0    Symfony polyfill for uuid functions
symfony/profiler-pack              v1.0.5     A pack for the Symfony web profiler
symfony/property-access            v5.2.0-RC1 Symfony PropertyAccess Component
symfony/property-info              v5.2.0-RC1 Symfony Property Info Component
symfony/routing                    v5.2.0-RC1 Symfony Routing Component
symfony/security-bundle            v5.2.0-RC1 Symfony SecurityBundle
symfony/security-core              v5.2.0-RC1 Symfony Security Component - Core Library
symfony/security-csrf              v5.2.0-RC1 Symfony Security Component - CSRF Library
symfony/security-guard             v5.2.0-RC1 Symfony Security Component - Guard
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symfony/stopwatch                  v5.2.0-RC1 Symfony Stopwatch Component
symfony/string                     v5.2.0-RC1 Symfony String component
symfony/test-pack                  v1.0.7     A pack for functional and end-to-end testing within a Symfony app
symfony/translation                v5.2.0-RC1 Symfony Translation Component
symfony/translation-contracts      v2.3.0     Generic abstractions related to translation
symfony/twig-bridge                v5.2.0-RC1 Symfony Twig Bridge
symfony/twig-bundle                v5.2.0-RC1 Symfony TwigBundle
symfony/twig-pack                  v1.0.1     A Twig pack for Symfony projects
symfony/validator                  v5.2.0-RC1 Symfony Validator Component
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symfony/var-exporter               v5.2.0-RC1 A blend of var_export() + serialize() to turn any serializable data structure to plain PHP code
symfony/web-profiler-bundle        v5.2.0-RC1 Symfony WebProfilerBundle
symfony/webpack-encore-bundle      v1.8.0     Integration with your Symfony app & Webpack Encore!
symfony/yaml                       v5.2.0-RC1 Symfony Yaml Component

DATABASE_URL="postgres://my_user:123456@host:5432/my_db?serverVersion=13&charset=utf8"

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