Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires doctrine/collections ^3.0 -> satisfiable by doctrine/collections[3.0.0, ..., 3.2.x-dev]. - doctrine/collections[3.0.0, ..., 3.2.x-dev] require php ^8.4 -> your php version (8.1.34) does not satisfy that requirement.