Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nyholm/symfony-bundle-test 1.x-dev -> satisfiable by nyholm/symfony-bundle-test[1.x-dev]. - nyholm/symfony-bundle-test 1.x-dev requires symfony/dependency-injection ^4.3 || ^5.0 || ^6.0 -> found symfony/dependency-injection[v4.3.0, ..., v4.4.49, v5.0.0, ..., v5.4.34, v6.0.0, ..., v6.4.2] but these were not loaded, likely because it conflicts with another require.