Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^10.5.27 -> satisfiable by phpunit/phpunit[10.5.27]. - phpunit/phpunit 10.5.27 requires phpunit/php-code-coverage ^10.1.15 -> satisfiable by phpunit/php-code-coverage[10.1.15, 10.1.x-dev] from composer repo (https://repo.packagist.org) but phpunit/php-code-coverage is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance.