Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires acquia/drupal-spec-tool * -> satisfiable by acquia/drupal-spec-tool[dev-master]. - acquia/drupal-spec-tool dev-master requires drupal/core ^10.0.0-alpha1 -> found drupal/core[10.0.0-alpha1, ..., 10.1.x-dev] but it conflicts with your root composer.json require (11.x-dev). Problem 2 - drupal/core-recommended 10.0.x-dev requires drupal/core 10.0.x-dev -> found drupal/core[10.0.x-dev] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.1.x-dev requires drupal/core 10.1.x-dev -> found drupal/core[10.1.x-dev] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-alpha1 requires drupal/core 10.0.0-alpha1 -> found drupal/core[10.0.0-alpha1] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-alpha2 requires drupal/core 10.0.0-alpha2 -> found drupal/core[10.0.0-alpha2] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-alpha3 requires drupal/core 10.0.0-alpha3 -> found drupal/core[10.0.0-alpha3] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-alpha4 requires drupal/core 10.0.0-alpha4 -> found drupal/core[10.0.0-alpha4] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-alpha5 requires drupal/core 10.0.0-alpha5 -> found drupal/core[10.0.0-alpha5] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-alpha6 requires drupal/core 10.0.0-alpha6 -> found drupal/core[10.0.0-alpha6] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-alpha7 requires drupal/core 10.0.0-alpha7 -> found drupal/core[10.0.0-alpha7] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-beta1 requires drupal/core 10.0.0-beta1 -> found drupal/core[10.0.0-beta1] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-beta2 requires drupal/core 10.0.0-beta2 -> found drupal/core[10.0.0-beta2] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-rc1 requires drupal/core 10.0.0-rc1 -> found drupal/core[10.0.0-rc1] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-rc2 requires drupal/core 10.0.0-rc2 -> found drupal/core[10.0.0-rc2] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0-rc3 requires drupal/core 10.0.0-rc3 -> found drupal/core[10.0.0-rc3] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.0 requires drupal/core 10.0.0 -> found drupal/core[10.0.0] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.1 requires drupal/core 10.0.1 -> found drupal/core[10.0.1] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.2 requires drupal/core 10.0.2 -> found drupal/core[10.0.2] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.3 requires drupal/core 10.0.3 -> found drupal/core[10.0.3] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.4 requires drupal/core 10.0.4 -> found drupal/core[10.0.4] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.5 requires drupal/core 10.0.5 -> found drupal/core[10.0.5] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.6 requires drupal/core 10.0.6 -> found drupal/core[10.0.6] but it conflicts with your root composer.json require (11.x-dev). - drupal/core-recommended 10.0.7 requires drupal/core 10.0.7 -> found drupal/c