Your requirements could not be resolved to an installable set of packages. Problem 1 - symfony/filesystem[v7.0.0, ..., v7.0.3] require php >=8.2 -> your php version (8.1.27) does not satisfy that requirement. - knplabs/dictionary-bundle is present at version dev-test/github-actions and cannot be modified by Composer - friendsofphp/php-cs-fixer v3.40.0 requires symfony/filesystem ^5.4 || ^6.0 || ^7.0 -> satisfiable by symfony/filesystem[v5.4.0, ..., v5.4.35, v6.0.0, ..., v6.4.3, v7.0.0, v7.0.3]. - knplabs/dictionary-bundle dev-test/github-actions conflicts with symfony/filesystem v6.4.3. - knplabs/dictionary-bundle dev-test/github-actions conflicts with symfony/filesystem v6.0.19. - knplabs/dictionary-bundle dev-test/github-actions conflicts with symfony/filesystem v5.4.35. - Root composer.json requires friendsofphp/php-cs-fixer 3.40.0 -> satisfiable by friendsofphp/php-cs-fixer[v3.40.0].