Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^11.0.0 -> satisfiable by phpunit/phpunit[11.0.0, ..., 11.0.6]. - phpunit/phpunit[11.0.0, ..., 11.0.6] require php >=8.2 -> your php version (8.1.27) does not satisfy that requirement. Problem 2 - laminas/laminas-cache-storage-adapter-test[2.0.0, ..., 2.0.x-dev] require phpunit/phpunit ^9.5.9 -> found phpunit/phpunit[9.5.9, ..., 9.6.17] but it conflicts with your root composer.json require (^11.0.0). - laminas/laminas-cache-storage-adapter-test[2.1.0, ..., 2.2.x-dev] require cache/integration-tests dev-master -> found cache/integration-tests[dev-master] but it does not match your minimum-stability. - laminas/laminas-cache-storage-adapter-test[2.3.0, ..., 2.6.x-dev] require phpunit/phpunit ^9.5.20 -> found phpunit/phpunit[9.5.20, ..., 9.6.17] but it conflicts with your root composer.json require (^11.0.0). - Root composer.json requires laminas/laminas-cache-storage-adapter-test ^2.0 || 2.0.x-dev -> satisfiable by laminas/laminas-cache-storage-adapter-test[2.0.0, ..., 2.6.x-dev]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.