Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/php-code-coverage[11.0.7, ..., 11.0.8] require nikic/php-parser ^5.3.1 -> found nikic/php-parser[v5.3.1] but it conflicts with your root composer.json require (^4.19.1). - phpunit/phpunit 11.5.1 requires phpunit/php-code-coverage ^11.0.7 -> satisfiable by phpunit/php-code-coverage[11.0.7, 11.0.8]. - Root composer.json requires phpunit/phpunit ^11.5.1 -> satisfiable by phpunit/phpunit[11.5.1]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.