Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/php-code-coverage[11.0.0, ..., 11.0.3] require nikic/php-parser ^5.0 -> found nikic/php-parser[v5.0.0, v5.0.1, v5.0.2] but it conflicts with your root composer.json require (^4.15.3). - phpunit/phpunit 11.0.6 requires phpunit/php-code-coverage ^11.0 -> satisfiable by phpunit/php-code-coverage[11.0.0, 11.0.1, 11.0.2, 11.0.3]. - Root composer.json requires phpunit/phpunit ^11.0.6 -> satisfiable by phpunit/phpunit[11.0.6]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.