Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/php-code-coverage ^12.0.0 -> satisfiable by phpunit/php-code-coverage[12.0.0]. - phpunit/php-code-coverage 12.0.0 requires phpunit/php-file-iterator ^6.0 -> found phpunit/php-file-iterator[6.0.0] but it conflicts with your root composer.json require (^5.1.0). Problem 2 - Root composer.json requires phpunit/phpunit ^11.5.7 -> satisfiable by phpunit/phpunit[11.5.7]. - phpunit/phpunit 11.5.7 requires phpunit/php-code-coverage ^11.0.8 -> found phpunit/php-code-coverage[11.0.8] but it conflicts with your root composer.json require (^12.0.0).