Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires laravel/framework 12.* -> satisfiable by laravel/framework[v12.0.0, v12.0.1, 12.x-dev]. - laravel/framework[v12.0.0, ..., 12.x-dev] require nesbot/carbon ^3.8.4 -> found nesbot/carbon[dev-master, 3.8.4, 3.8.5, 3.8.6, 3.x-dev (alias of dev-master)] but it conflicts with your root composer.json require (^2.64.1).