Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ^8.1 but your php version (8.0.30) does not satisfy that requirement. Problem 2 - Root composer.json requires doctrine/collections ^2.0 -> satisfiable by doctrine/collections[2.0.0, ..., 2.1.x-dev]. - doctrine/collections[2.0.0, ..., 2.1.x-dev] require php ^8.1 -> your php version (8.0.30) does not satisfy that requirement.