Your requirements could not be resolved to an installable set of packages. Problem 1 - ssch/typo3-rector[v1.7.1, ..., v1.8.1] require nikic/php-parser ^4.18.0 -> satisfiable by nikic/php-parser[v4.18.0, v4.19.0, v4.19.1]. - ssch/typo3-rector[v1.5.0, ..., v1.7.0] require nikic/php-parser ^4.17 -> satisfiable by nikic/php-parser[v4.17.0, ..., v4.19.1]. - You can only install one version of a package, so only one of these can be installed: nikic/php-parser[v4.10.0, ..., v4.19.1, v5.0.0, v5.0.1, v5.0.2, v5.1.0]. - phpunit/php-code-coverage[11.0.0, ..., 11.0.5] require nikic/php-parser ^5.0 -> satisfiable by nikic/php-parser[v5.0.0, v5.0.1, v5.0.2, v5.1.0]. - phpunit/phpcov 10.0.0 requires phpunit/php-code-coverage ^11.0 -> satisfiable by phpunit/php-code-coverage[11.0.0, ..., 11.0.5]. - Root composer.json requires phpunit/phpcov ^10.0 -> satisfiable by phpunit/phpcov[10.0.0]. - Root composer.json requires ssch/typo3-rector ^1.5 -> satisfiable by ssch/typo3-rector[v1.5.0, ..., v1.8.1].