Your requirements could not be resolved to an installable set of packages. Problem 1 - drupal/acquia_cms_tour[dev-1.3.x, dev-2.x, 1.3.7, ..., 1.3.9, 2.1.6, ..., 2.x-dev] require drupal/core ^9.4 || ^10 -> found drupal/core[9.4.0-alpha1, ..., 9.5.x-dev, 10.0.0-alpha1, ..., 10.4.x-dev] but it conflicts with your root composer.json require (11.0.1). - drupal/acquia_cms_tour[1.3.0-alpha1, ..., 1.3.4, 2.0.0, ..., 2.1.3] require drupal/core ^9 -> found drupal/core[9.0.0-alpha1, ..., 9.5.x-dev] but it conflicts with your root composer.json require (11.0.1). - drupal/acquia_cms_tour[1.3.5, ..., 1.3.6, 2.1.4, ..., 2.1.5] require drupal/core ^9 || ^10 -> found drupal/core[9.0.0-alpha1, ..., 9.5.x-dev, 10.0.0-alpha1, ..., 10.4.x-dev] but it conflicts with your root composer.json require (11.0.1). - drupal/acquia_cms_tour 1.3.x-dev is an alias of drupal/acquia_cms_tour dev-1.3.x and thus requires it to be installed too. - Root composer.json requires drupal/acquia_cms_tour * -> satisfiable by drupal/acquia_cms_tour[dev-1.3.x, dev-2.x, 1.3.0-alpha1, ..., 1.3.x-dev (alias of dev-1.3.x), 2.0.0, ..., 2.x-dev].