Php versions – Deprecation warnings after upgrading Symfony 4.3.9 to 4.4.1/5.0

I had a deprecation-free Symfony 3.4.9 installation. So I upgraded the FW to 4.1.1. Now I got 9 deprecation warnings all coming from vendor libraries:

• Creating DoctrineORMMappingUnderscoreNamingStrategy without making it number aware is deprecated and will be removed in Doctrine ORM 3.0.
• The “SymfonyComponentHttpKernelEventListenerExceptionListener” class is deprecated since Symfony 4.4, use “ErrorListener” instead.
• The DoctrineCommonPersistenceMappingAbstractClassMetadataFactory class is deprecated since doctrine/persistence 1.3 and will be removed in 2.0. Use DoctrinePersistenceMappingAbstractClassMetadataFactory instead.
• The DoctrineCommonPersistenceMappingRuntimeReflectionService class is deprecated since doctrine/persistence 1.3 and will be removed in 2.0. Use DoctrinePersistenceMappingRuntimeReflectionService instead.
• The DoctrineCommonPersistenceObjectManager class is deprecated since doctrine/persistence 1.3 and will be removed in 2.0. Use DoctrinePersistenceObjectManager instead.
• The DoctrineCommonPersistenceObjectRepository class is deprecated since doctrine/persistence 1.3 and will be removed in 2.0. Use DoctrinePersistenceObjectRepository instead.
• The DoctrineCommonPropertyChangedListener class is deprecated since doctrine/persistence 1.3 and will be removed in 2.0. Use DoctrinePersistencePropertyChangedListener instead.
• The “twig.exception_controller” configuration key has been deprecated in Symfony 4.4, set it to “null” and use “framework.error_controller” configuration key instead. (x2)

Is this “normal” or there is any problems in my composer.json file ? I double checked and can’t see any dependency that has any “fixed” setting.

I even deleted the full vendor folder and downloaded again as I thought there could be any “garbage” left, with same result.

My composer.json file:

{
    "type" : "project",
    "license" : "proprietary",
    "require" : {
        "php" : "^7.1.3",
        "ext-ctype" : "*",
        "ext-iconv" : "*",
        "sensio/framework-extra-bundle" : "^5.2",
        "symfony/apache-pack" : "^1.0",
        "symfony/asset" : "4.4.*",
        "symfony/console" : "4.4.*",
        "symfony/dotenv" : "4.4.*",
        "symfony/expression-language" : "4.4.*",
        "symfony/flex" : "^1.1",
        "symfony/form" : "4.4.*",
        "symfony/framework-bundle" : "4.4.*",
        "symfony/monolog-bundle" : "^3.1",
        "symfony/orm-pack" : "*",
        "symfony/process" : "4.4.*",
        "symfony/security-bundle" : "4.4.*",
        "symfony/serializer-pack" : "*",
        "symfony/swiftmailer-bundle" : "^3.1",
        "symfony/translation" : "4.4.*",
        "symfony/twig-bundle" : "4.4.*",
        "symfony/validator" : "4.4.*",
        "symfony/web-link" : "4.4.*",
        "symfony/webpack-encore-bundle" : "^1.1",
        "symfony/yaml" : "4.4.*"
    },
    "require-dev" : {
        "symfony/debug-pack" : "*",
        "symfony/maker-bundle" : "^1.0",
        "symfony/profiler-pack" : "^1.0",
        "symfony/test-pack" : "*",
        "symfony/web-server-bundle" : "4.4.*"
    },
    "config" : {
        "preferred-install" : {
            "*" : "dist"
        },
        "sort-packages" : true,
        "secure-http" : false
    },
    "autoload" : {
        "psr-4" : {
            "App\" : "src/"
        }
    },
    "autoload-dev" : {
        "psr-4" : {
            "App\Tests\" : "tests/"
        },
        "classmap" : [
            "vendor/phpasn1"
        ]
    },
    "replace" : {
        "paragonie/random_compat" : "2.*",
        "symfony/polyfill-ctype" : "*",
        "symfony/polyfill-iconv" : "*",
        "symfony/polyfill-php71" : "*",
        "symfony/polyfill-php70" : "*",
        "symfony/polyfill-php56" : "*"
    },
    "conflict" : {
        "symfony/symfony" : "*"
    },
    "extra" : {
        "symfony" : {
            "allow-contrib" : false,
            "require" : "4.4.*"
        }
    }
}

EDIT

I checked installed packages with composer show and see that at least 2 of the installed packages are relevant with the deprecation list above:

(...)
doctrine/orm                        v2.7.0  Object-Relational-Mapper for PHP
doctrine/persistence                1.3.3   The Doctrine Persistence project is a set of shared...
(...)

So I checked the available versions of these packages with composer info doctrine/persistence --all and I saw that it has installed the latest non-dev version:

name     : doctrine/persistence
descrip. : The Doctrine Persistence project is a set of shared interfaces and functionality that the different Doctrine object mappers share.
keywords : mapper, object, odm, orm, persistence
versions : dev-master, 2.0.x-dev, 1.3.x-dev, * 1.3.3, 1.3.2, 1.3.1, 1.3.0, 1.2.x-dev, 1.2.0, 1.1.x-dev, 1.1.1, v1.1.0, 1.0.x-dev, v1.0.1, v1.0.0, dev-1.3.x-merge-up-into-master_5df35c38f354a9.94042071, dev-1.3.x-merge-up-into-master_5df33dc289ea03.65167777, dev-1.3.x-merge-up-into-master_5df29d964b0aa5.96685696, dev-github-funding, dev-master-old
(...)

Same for doctrine-orm.

The GitHub site for doctrine/persistence also seems to corroborate this: https://github.com/doctrine/persistence/releases

So this leads me to think that this is really normal behavior and that in future, when these packages get updated, the deprecation messages will disappear.

Note on solution

As anyone who have read the accepted answer will notice, there are still 5 deprecation that cannot be solved just yet. I’ll include an answer ASA there are a fix for this. If anyone notices this before me, please fell free to add an answer to this question. Thanks.