Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires laravel/framework 11.* -> satisfiable by laravel/framework[v11.0.0, ..., 11.x-dev]. - Root composer.json requires spatie/laravel-package-tools 1.16 -> satisfiable by spatie/laravel-package-tools[1.16.0]. - laravel/framework[v11.34.0, ..., 11.x-dev] require nesbot/carbon ^2.72.2|^3.4 -> found nesbot/carbon[dev-master, 2.72.2, ..., 2.x-dev, 3.4.0, ..., 3.x-dev (alias of dev-master)] but it conflicts with your root composer.json require (3.2). - spatie/laravel-package-tools 1.16.0 requires illuminate/contracts ^9.28|^10.0 -> satisfiable by illuminate/contracts[v10.0.0, ..., 10.x-dev]. - Conclusion: don't install illuminate/contracts v10.0.0 (conflict analysis result) - Conclusion: don't install illuminate/contracts v10.24.0 (conflict analysis result) - Only one of these can be installed: laravel/framework[v11.0.0, ..., 11.x-dev], illuminate/contracts[v10.0.0, ..., 10.x-dev, v11.0.0, ..., 11.x-dev]. laravel/framework replaces illuminate/contracts and thus cannot coexist with it.