Your requirements could not be resolved to an installable set of packages. Problem 1 - webmozarts/console-parallelization is present at version dev-a01751d7c31c263c39cef24258369da38493130e and cannot be modified by Composer - Root composer.json requires symfony/framework-bundle ^6.4.10 -> satisfiable by symfony/framework-bundle[v6.4.10, v6.4.12, v6.4.13]. - symfony/config[v7.0.0, ..., v7.2.0] require php >=8.2 -> your php version (8.1.31) does not satisfy that requirement. - symfony/framework-bundle[v6.4.10, ..., v6.4.13] require symfony/config ^6.1|^7.0 -> satisfiable by symfony/config[v6.1.0, ..., v6.4.14, v7.0.0, ..., v7.2.0]. - webmozarts/console-parallelization dev-a01751d7c31c263c39cef24258369da38493130e conflicts with symfony/config v6.4.14. - webmozarts/console-parallelization dev-a01751d7c31c263c39cef24258369da38493130e conflicts with symfony/config v6.3.12. - webmozarts/console-parallelization dev-a01751d7c31c263c39cef24258369da38493130e conflicts with symfony/config v6.2.13. - webmozarts/console-parallelization dev-a01751d7c31c263c39cef24258369da38493130e conflicts with symfony/config v6.1.11.