Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/psr-http-message-bridge ^8.0.0 -> satisfiable by symfony/psr-http-message-bridge[v8.0.0-BETA1, ..., 8.1.x-dev]. - symfony/psr-http-message-bridge[v8.0.0-BETA1, ..., 8.1.x-dev] require php >=8.4 -> your php version (8.3.6) does not satisfy that requirement. Problem 2 - Root composer.json requires orchestra/testbench ^10.8.0 -> satisfiable by orchestra/testbench[v10.8.0, 10.x-dev]. - orchestra/testbench[v10.8.0, ..., 10.x-dev] require laravel/framework ^12.40.0 -> found laravel/framework[v12.40.0, ..., 12.x-dev] but it conflicts with your root composer.json require (^11).