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 phpstan/phpstan ^1.10.56 -> satisfiable by phpstan/phpstan[1.10.56, ..., 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].