Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 but your php version (7.3.33) does not satisfy that requirement. Problem 2 - Root composer.json requires fakerphp/faker ^1.23.1 -> satisfiable by fakerphp/faker[v1.23.1]. - fakerphp/faker v1.23.1 requires php ^7.4 || ^8.0 -> your php version (7.3.33) does not satisfy that requirement. Problem 3 - infection/infection 0.26.6 requires php ^7.4.7 || ^8.0 -> your php version (7.3.33) does not satisfy that requirement. - infection/infection[0.26.7, ..., 0.26.19] require php ^8.0 -> your php version (7.3.33) does not satisfy that requirement. - infection/infection[0.26.20, ..., 0.26.21] require php ^8.1 -> your php version (7.3.33) does not satisfy that requirement. - Root composer.json requires infection/infection ~0.26.6 -> satisfiable by infection/infection[0.26.6, ..., 0.26.21].