Your requirements could not be resolved to an installable set of packages. Problem 1 - maglnet/composer-require-checker 4.11.0 requires nikic/php-parser ^4.19.1 -> satisfiable by nikic/php-parser[v4.19.1]. - maglnet/composer-require-checker[4.9.0, ..., 4.10.0] require nikic/php-parser ^4.18.0 -> satisfiable by nikic/php-parser[v4.18.0, v4.19.0, v4.19.1]. - maglnet/composer-require-checker[4.7.0, ..., 4.8.0] require nikic/php-parser ^4.17.1 -> satisfiable by nikic/php-parser[v4.17.1, v4.18.0, v4.19.0, v4.19.1]. - maglnet/composer-require-checker[4.5.0, ..., 4.6.0] require nikic/php-parser ^4.15.2 -> satisfiable by nikic/php-parser[v4.15.2, ..., v4.19.1]. - maglnet/composer-require-checker[4.2.0, ..., 4.4.0] require nikic/php-parser ^4.13.0 -> satisfiable by nikic/php-parser[v4.13.0, ..., v4.19.1]. - You can only install one version of a package, so only one of these can be installed: nikic/php-parser[v4.15.2, ..., v4.19.1, v5.0.0, v5.0.1, v5.0.2]. - phpunit/php-code-coverage[11.0.0, ..., 11.0.3] require nikic/php-parser ^5.0 -> satisfiable by nikic/php-parser[v5.0.0, v5.0.1, v5.0.2]. - phpunit/phpunit[11.0.0, ..., 11.1.3] require 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 -> satisfiable by phpunit/phpunit[11.0.0, ..., 11.1.3]. - Root composer.json requires maglnet/composer-require-checker ^4.2 -> satisfiable by maglnet/composer-require-checker[4.2.0, ..., 4.11.0].