Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^11.0 -> satisfiable by phpunit/phpunit[11.0.0]. - phpunit/phpunit 11.0.0 requires php >=8.2 -> your php version (8.1.27) does not satisfy that requirement. Problem 2 - laminas/laminas-test[4.9.0, ..., 4.10.0] require phpunit/phpunit ^10.4 -> found phpunit/phpunit[10.4.0, ..., 10.5.9] but it conflicts with your root composer.json require (^11.0). - Root composer.json requires laminas/laminas-test ^4.9 -> satisfiable by laminas/laminas-test[4.9.0, 4.10.0].