Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires doctrine/phpcr-odm dev-symfony-7 as 2.0 -> satisfiable by doctrine/phpcr-odm[dev-symfony-7]. - doctrine/phpcr-odm dev-symfony-7 requires phpcr/phpcr-utils dev-symfony-7 as 1.3.0 -> found phpcr/phpcr-utils[dev-symfony-7] but it conflicts with your root composer.json require (^1.3).