Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires typo3/cms-dashboard ^14.0 -> satisfiable by typo3/cms-dashboard[v14.0.0]. - typo3/cms-dashboard v14.0.0 requires typo3/cms-core 14.0.0 -> found typo3/cms-core[v14.0.0] but it conflicts with your root composer.json require (^12.0 || ^13.0). Problem 2 - Root composer.json requires typo3/cms-base-distribution ^12.0 || ^13.4 -> satisfiable by typo3/cms-base-distribution[v12.0.0, ..., v12.4.1, v13.4.0, v13.4.1]. - typo3/cms-base-distribution[v12.0.0, ..., v12.0.1] require typo3/cms-dashboard ^12.0 -> found typo3/cms-dashboard[v12.0.0, ..., v12.4.39] but it conflicts with your root composer.json require (^14.0). - typo3/cms-base-distribution v12.1.0 requires typo3/cms-dashboard ^12.1.0 -> found typo3/cms-dashboard[v12.1.0, ..., v12.4.39] but it conflicts with your root composer.json require (^14.0). - typo3/cms-base-distribution v12.3.0 requires typo3/cms-dashboard ^12.3.0 -> found typo3/cms-dashboard[v12.3.0, ..., v12.4.39] but it conflicts with your root composer.json require (^14.0). - typo3/cms-base-distribution[v12.4.0, ..., v12.4.1] require typo3/cms-dashboard ^12.4 -> found typo3/cms-dashboard[v12.4.0, ..., v12.4.39] but it conflicts with your root composer.json require (^14.0). - typo3/cms-base-distribution[v13.4.0, ..., v13.4.1] require typo3/cms-dashboard ^13.4 -> found typo3/cms-dashboard[v13.4.0, ..., v13.4.20] but it conflicts with your root composer.json require (^14.0).