Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires orchestra/testbench 10.* -> satisfiable by orchestra/testbench[10.0.x-dev, 10.x-dev]. - orchestra/testbench[10.0.x-dev, ..., 10.x-dev] require phpunit/phpunit ^11.5.3 -> found phpunit/phpunit[11.5.3, ..., 11.5.x-dev] but it conflicts with your root composer.json require (^8.0 || ^9.5 || ^10.5).