Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires illuminate/support ^10 -> satisfiable by illuminate/support[v10.0.0, ..., v10.48.28]. - Root composer.json requires orchestra/testbench ^9.0|^10.0 -> satisfiable by orchestra/testbench[v9.0.0, ..., v9.13.1, v10.0.0, ..., v10.2.2]. - orchestra/testbench[v10.0.0, ..., v10.1.0] require phpunit/phpunit ^11.5.3 -> found phpunit/phpunit[11.5.3, ..., 11.5.18] but it conflicts with your root composer.json require (^10.0). - orchestra/testbench[v10.2.0, ..., v10.2.2] require phpunit/phpunit ^11.5.3|^12.0.1 -> found phpunit/phpunit[11.5.3, ..., 11.5.18, 12.0.1, ..., 12.1.3] but it conflicts with your root composer.json require (^10.0). - orchestra/testbench[v9.0.0, ..., v9.0.2] require laravel/framework ^11.0 -> satisfiable by laravel/framework[v11.0.0, ..., v11.44.7]. - orchestra/testbench[v9.0.3, ..., v9.0.4] require laravel/framework ^11.1 -> satisfiable by laravel/framework[v11.1.0, ..., v11.44.7]. - orchestra/testbench[v9.1.0, ..., v9.1.2] require laravel/framework ^11.7 -> satisfiable by laravel/framework[v11.7.0, ..., v11.44.7]. - orchestra/testbench v9.10.0 requires laravel/framework ^11.42.1 -> satisfiable by laravel/framework[v11.42.1, ..., v11.44.7]. - orchestra/testbench v9.11.0 requires laravel/framework ^11.43.0 -> satisfiable by laravel/framework[v11.43.0, ..., v11.44.7]. - orchestra/testbench v9.12.0 requires laravel/framework ^11.44.1 -> satisfiable by laravel/framework[v11.44.1, ..., v11.44.7]. - orchestra/testbench v9.13.0 requires laravel/framework ^11.44.2 -> satisfiable by laravel/framework[v11.44.2, ..., v11.44.7]. - orchestra/testbench v9.13.1 requires laravel/framework ^11.44.7 -> satisfiable by laravel/framework[v11.44.7]. - orchestra/testbench[v9.2.0, ..., v9.5.2] require laravel/framework ^11.11 -> satisfiable by laravel/framework[v11.11.0, ..., v11.44.7]. - orchestra/testbench v9.6.0 requires laravel/framework ^11.31 -> satisfiable by laravel/framework[v11.31.0, ..., v11.44.7]. - orchestra/testbench v9.6.1 requires laravel/framework ^11.33.2 -> satisfiable by laravel/framework[v11.33.2, ..., v11.44.7]. - orchestra/testbench[v9.7.0, ..., v9.9.0] require laravel/framework ^11.35.0 -> satisfiable by laravel/framework[v11.35.0, ..., v11.44.7]. - Conclusion: don't install illuminate/support v10.48.28 (conflict analysis result) - Only one of these can be installed: laravel/framework[v11.0.0, ..., v11.44.7, v12.0.0, ..., v12.11.1], illuminate/support[v10.0.0, ..., v10.48.28]. laravel/framework replaces illuminate/support and thus cannot coexist with it.