Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires fakerphp/core dev-main -> satisfiable by fakerphp/core[dev-main]. - fakerphp/core dev-main requires php ^8.1 -> your php version (7.4.33) does not satisfy that requirement. Problem 2 - Root composer.json requires symfony/var-dumper ^6.4 -> satisfiable by symfony/var-dumper[v6.4.0, ..., v6.4.18]. - symfony/var-dumper[v6.4.0, ..., v6.4.18] require php >=8.1 -> your php version (7.4.33) does not satisfy that requirement.