Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires doctrine/rst-parser ^0.5.4 -> satisfiable by doctrine/rst-parser[0.5.4, 0.5.5]. - doctrine/rst-parser[0.5.4, ..., 0.5.5] require symfony/finder ^4.1 || ^5.0 || ^6.0 -> found symfony/finder[v4.1.0, ..., v4.4.44, v5.0.0, ..., v5.4.27, v6.0.0, ..., v6.4.0] but it conflicts with your root composer.json require (^v7.0.0). Problem 2 - maglnet/composer-require-checker 4.6.0 requires symfony/console ^6.2.3 -> found symfony/console[v6.2.3, ..., v6.4.0] but it conflicts with your root composer.json require (^v7.0.0). - maglnet/composer-require-checker[4.7.0, ..., 4.7.1] require symfony/console ^6.3.4 -> found symfony/console[v6.3.4, v6.3.8, v6.3.9, v6.4.0] but it conflicts with your root composer.json require (^v7.0.0). - Root composer.json requires maglnet/composer-require-checker ^4.6.0 -> satisfiable by maglnet/composer-require-checker[4.6.0, 4.7.0, 4.7.1].