Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php >8.2 but your php version (8.1.31) does not satisfy that requirement. Problem 2 - Root composer.json requires nettrine/dbal ^0.10.0 -> satisfiable by nettrine/dbal[0.10.x-dev (alias of dev-master)]. - nettrine/dbal dev-master requires php >=8.2 -> your php version (8.1.31) does not satisfy that requirement. - nettrine/dbal 0.10.x-dev is an alias of nettrine/dbal dev-master and thus requires it to be installed too.