Your requirements could not be resolved to an installable set of packages. Problem 1 - Conclusion: don't install symfony/dependency-injection v5.4.36 (conflict analysis result) - Conclusion: don't install symfony/dependency-injection v6.4.4 (conflict analysis result) - symfony/symfony[v4.4.0, ..., v4.4.8] require php ^7.1.3 -> your php version (8.1.27) does not satisfy that requirement. - symfony/dependency-injection[v7.0.0, ..., v7.0.4] require php >=8.2 -> your php version (8.1.27) does not satisfy that requirement. - Only one of these can be installed: symfony/symfony[v4.4.0, ..., v4.4.51], symfony/dependency-injection[v5.4.0, ..., v5.4.36, v6.4.0, ..., v6.4.4, v7.0.0, ..., v7.0.4]. symfony/symfony replaces symfony/dependency-injection and thus cannot coexist with it. - Root composer.json requires symfony/dependency-injection ^5.4 || ^6.4 || ^7.0 -> satisfiable by symfony/dependency-injection[v5.4.0, ..., v5.4.36, v6.4.0, ..., v6.4.4, v7.0.0, ..., v7.0.4]. - Root composer.json requires symfony/symfony ^4.4 -> satisfiable by symfony/symfony[v4.4.0, ..., v4.4.51].