Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/php-code-coverage 11.0.6 requires nikic/php-parser ^5.1.0 -> found nikic/php-parser[v5.1.0, v5.2.0, v5.3.0] but it conflicts with your root composer.json require (^4.16.0). - phpunit/phpunit 11.4.1 requires phpunit/php-code-coverage ^11.0.6 -> satisfiable by phpunit/php-code-coverage[11.0.6]. - Root composer.json requires phpunit/phpunit ^11.4.1 -> satisfiable by phpunit/phpunit[11.4.1]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.