Your requirements could not be resolved to an installable set of packages. Problem 1 - nuwave/lighthouse[v6.0.0-alpha.1, ..., v6.33.0] require illuminate/validation ^9 || ^10 -> satisfiable by illuminate/validation[v9.0.0-beta.1, ..., 9.x-dev, v10.0.0, ..., 10.x-dev]. - Only one of these can be installed: illuminate/validation[v9.0.0-beta.1, ..., 9.x-dev, v10.0.0, ..., 10.x-dev], laravel/framework[dev-master]. laravel/framework replaces illuminate/validation and thus cannot coexist with it. - laravel/framework 11.x-dev is an alias of laravel/framework dev-master and thus requires it to be installed too. - Root composer.json requires laravel/framework 11.* -> satisfiable by laravel/framework[11.x-dev (alias of dev-master)]. - Root composer.json requires nuwave/lighthouse ^6.0 -> satisfiable by nuwave/lighthouse[v6.0.0-alpha.1, ..., v6.33.0].