Your requirements could not be resolved to an installable set of packages. Problem 1 - orchestra/testbench[v8.0.0, ..., 8.x-dev] require php ^8.1 -> your php version (8.0.30) does not satisfy that requirement. - orchestra/testbench[v7.0.0, ..., 7.x-dev] require phpunit/phpunit ^9.5.10 -> found phpunit/phpunit[9.5.10, ..., 9.6.x-dev] but it conflicts with your root composer.json require (^10.0). - Root composer.json requires orchestra/testbench ^7.0|^8.0 -> satisfiable by orchestra/testbench[v7.0.0, ..., 7.x-dev, v8.0.0, ..., 8.x-dev].