Your requirements could not be resolved to an installable set of packages. Problem 1 - typo3/cms-core[v12.4.0, ..., v12.4.16] require php ^8.1 -> your php version (8.0.30) does not satisfy that requirement. - Root composer.json requires typo3/cms-core ^12.4 -> satisfiable by typo3/cms-core[v12.4.0, ..., v12.4.16].