Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires typo3/cms-core ^13.3 -> satisfiable by typo3/cms-core[v13.3.0]. - typo3/cms-core v13.3.0 requires php ^8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 2 - typo3/testing-framework[8.0.1, ..., 8.2.1] require typo3/cms-core 12.*.*@dev || 13.*.*@dev -> satisfiable by typo3/cms-core[v13.3.0]. - typo3/testing-framework 8.0.0 requires typo3/cms-core 12.*.*@dev -> found typo3/cms-core[v12.0.0, ..., v12.4.20] but it conflicts with your root composer.json require (^13.3). - typo3/cms-core v13.3.0 requires php ^8.2 -> your php version (8.1.29) does not satisfy that requirement. - Root composer.json requires typo3/testing-framework ^8.0 -> satisfiable by typo3/testing-framework[8.0.0, ..., 8.2.1].