Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires typo3/cms-core dev-main -> satisfiable by typo3/cms-core[dev-main]. - typo3/cms-core dev-main requires php ^8.2 -> your php version (8.1.27) does not satisfy that requirement. Problem 2 - typo3/cms-backend 12.4.x-dev requires typo3/cms-core 12.4.*@dev -> found typo3/cms-core[v12.4.0, ..., 12.4.x-dev] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.0 requires typo3/cms-core 12.4.0 -> found typo3/cms-core[v12.4.0] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.1 requires typo3/cms-core 12.4.1 -> found typo3/cms-core[v12.4.1] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.2 requires typo3/cms-core 12.4.2 -> found typo3/cms-core[v12.4.2] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.3 requires typo3/cms-core 12.4.3 -> found typo3/cms-core[v12.4.3] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.4 requires typo3/cms-core 12.4.4 -> found typo3/cms-core[v12.4.4] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.5 requires typo3/cms-core 12.4.5 -> found typo3/cms-core[v12.4.5] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.6 requires typo3/cms-core 12.4.6 -> found typo3/cms-core[v12.4.6] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.7 requires typo3/cms-core 12.4.7 -> found typo3/cms-core[v12.4.7] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.8 requires typo3/cms-core 12.4.8 -> found typo3/cms-core[v12.4.8] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.9 requires typo3/cms-core 12.4.9 -> found typo3/cms-core[v12.4.9] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.10 requires typo3/cms-core 12.4.10 -> found typo3/cms-core[v12.4.10] but it conflicts with your root composer.json require (dev-main). - typo3/cms-backend v12.4.11 requires typo3/cms-core 12.4.11 -> found typo3/cms-core[v12.4.11] but it conflicts with your root composer.json require (dev-main). - Root composer.json requires typo3/cms-backend ^12.4 -> satisfiable by typo3/cms-backend[v12.4.0, ..., 12.4.x-dev].

Process completed with exit code 2.