Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires silverstripe/installer 6.0-alpha1 -> satisfiable by silverstripe/installer[6.0.0-alpha1]. - silverstripe/installer 6.0.0-alpha1 requires php ^8.3 -> your php version (8.1; overridden via config.platform, actual: 8.1.31) does not satisfy that requirement. Problem 2 - Root composer.json requires silverstripe/framework ^6 -> satisfiable by silverstripe/framework[6.0.0-alpha1, 6.0.x-dev, 6.x-dev]. - silverstripe/framework[6.0.0-alpha1, ..., 6.0.x-dev] require php ^8.3 -> your php version (8.1; overridden via config.platform, actual: 8.1.31) does not satisfy that requirement.

Process completed with exit code 2.