Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ^8.3 but your php version (8.1.34) does not satisfy that requirement. Problem 2 - Root composer.json requires sebastian/diff ^6.0.2|^7.0.0 -> satisfiable by sebastian/diff[6.0.2, 6.0.x-dev, 7.0.0, 7.0.x-dev]. - sebastian/diff[6.0.2, ..., 6.0.x-dev] require php >=8.2 -> your php version (8.1.34) does not satisfy that requirement. - sebastian/diff[7.0.0, ..., 7.0.x-dev] require php >=8.3 -> your php version (8.1.34) does not satisfy that requirement.