https://packagist.org/packages/symfony/object-mapper Component does not link to the right documentation link : https://symfony.com/doc/current/components/object-mapper.html (404) The documentation is available under : https://symfony.com/doc/current/object_mapper.html Either change the link on [README.md](https://github.com/symfony/symfony/blob/7.3/src/Symfony/Component/ObjectMapper/README.md) or add a redirection. The link is ok here : https://symfony.com/packages/ObjectMapper