Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires goalgorilla/open_social_dev dev-feature/PROD-31944-update-linting -> satisfiable by goalgorilla/open_social_dev[dev-feature/PROD-31944-update-linting]. - goalgorilla/open_social_dev dev-feature/PROD-31944-update-linting requires palantirnet/drupal-rector ^1.0 || ^0.20.3 -> satisfiable by palantirnet/drupal-rector[0.20.3]. - palantirnet/drupal-rector 0.20.3 requires rector/rector ^1.0 -> satisfiable by rector/rector[1.0.0, ..., 1.2.10]. - rector/rector 1.0.0 requires phpstan/phpstan ^1.10.56 -> satisfiable by phpstan/phpstan[1.10.56, ..., 1.12.x-dev]. - rector/rector[1.0.1, ..., 1.0.5] require phpstan/phpstan ^1.10.57 -> satisfiable by phpstan/phpstan[1.10.57, ..., 1.12.x-dev]. - rector/rector[1.2.6, ..., 1.2.10] require phpstan/phpstan ^1.12.5 -> satisfiable by phpstan/phpstan[1.12.5, ..., 1.12.x-dev]. - rector/rector[1.1.0, ..., 1.2.2] require phpstan/phpstan ^1.11 -> satisfiable by phpstan/phpstan[1.11.0, ..., 1.12.x-dev]. - rector/rector 1.2.3 requires phpstan/phpstan ^1.11.9 -> satisfiable by phpstan/phpstan[1.11.9, ..., 1.12.x-dev]. - rector/rector 1.2.4 requires phpstan/phpstan ^1.11.11 -> satisfiable by phpstan/phpstan[1.11.11, ..., 1.12.x-dev]. - rector/rector 1.2.5 requires phpstan/phpstan ^1.12.2 -> satisfiable by phpstan/phpstan[1.12.2, ..., 1.12.x-dev]. - Conclusion: install phpstan/phpstan 2.1.2 (conflict analysis result) - You can only install one version of a package, so only one of these can be installed: phpstan/phpstan[1.0.0, ..., 1.12.x-dev, 2.0.0, ..., 2.1.x-dev].