Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit 11.2.8 -> satisfiable by phpunit/phpunit[11.2.8]. - phpunit/phpunit 11.2.8 requires php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 2 - laminas/laminas-test 4.8.0 requires phpunit/phpunit ^10.0.0 -> found phpunit/phpunit[10.0.0, ..., 10.5.28] but it conflicts with your root composer.json require (11.2.8). - laminas/laminas-test[4.9.0, ..., 4.10.0] require phpunit/phpunit ^10.4 -> found phpunit/phpunit[10.4.0, ..., 10.5.28] but it conflicts with your root composer.json require (11.2.8). - Root composer.json requires laminas/laminas-test ^4.8 -> satisfiable by laminas/laminas-test[4.8.0, 4.9.0, 4.10.0].