Your requirements could not be resolved to an installable set of packages. Problem 1 - helhum/typo3-console[v7.1.2, ..., 7.x-dev] require typo3/cms-core ^11.5.3 || dev-main -> found typo3/cms-core[dev-main, v11.5.3, ..., 11.5.x-dev, 13.0.x-dev (alias of dev-main)] but it conflicts with your root composer.json require (^12.4). - Root composer.json requires helhum/typo3-console ^7.1.2 -> satisfiable by helhum/typo3-console[v7.1.2, ..., 7.x-dev].