Your requirements could not be resolved to an installable set of packages. Problem 1 - goalgorilla/open_social[10.0.0, ..., 10.3.x-dev] require drupal/devel 2.1 -> satisfiable by drupal/devel[2.1.0]. - You can only install one version of a package, so only one of these can be installed: drupal/devel[2.1.0, 5.1.2]. - goalgorilla/open_social_dev dev-dependabot/composer/symfony/phpunit-bridge-tw-7.0.1 requires drupal/devel 5.1.2 -> satisfiable by drupal/devel[5.1.2]. - Root composer.json requires goalgorilla/open_social_dev dev-dependabot/composer/symfony/phpunit-bridge-tw-7.0.1 -> satisfiable by goalgorilla/open_social_dev[dev-dependabot/composer/symfony/phpunit-bridge-tw-7.0.1]. - Root composer.json requires goalgorilla/open_social ^10 -> satisfiable by goalgorilla/open_social[10.0.0, ..., 10.3.x-dev].