Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires acquia/acquia_cms * -> satisfiable by acquia/acquia_cms[dev-develop]. - acquia/acquia_cms dev-develop requires drush/drush ^10 || ^11 || ^12 -> found drush/drush[10.0.0-alpha1, ..., 10.x-dev, 11.0.0-rc1, ..., 11.x-dev, 12.0.0-beta1, ..., 12.x-dev] but it conflicts with your root composer.json require (13.0.1). Problem 2 - Root composer.json requires drupal/core 11.0.1 -> satisfiable by drupal/core[11.0.1]. - drupal/core 11.0.1 requires php >=8.3.0 -> your php version (8.1.29) does not satisfy that requirement. Problem 3 - Root composer.json requires drush/drush 13.0.1 -> satisfiable by drush/drush[13.0.1]. - drush/drush 13.0.1 requires php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 4 - symfony/error-handler[v7.0.0-BETA1, ..., 7.2.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. - drupal/core-dev 11.0.1 requires symfony/error-handler ^7.1 -> satisfiable by symfony/error-handler[v7.1.0-BETA1, ..., 7.2.x-dev]. - Root composer.json requires drupal/core-dev 11.0.1 -> satisfiable by drupal/core-dev[11.0.1].