Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires illuminate/collections ^11 -> satisfiable by illuminate/collections[v11.0.0, ..., v11.23.5]. - illuminate/collections[v11.0.0, ..., v11.23.5] require php ^8.2 -> your php version (8.1.2) does not satisfy that requirement. Problem 2 - slub/liszt-common dev-dev requires illuminate/collections ^11 -> satisfiable by illuminate/collections[v11.0.0, ..., v11.23.5]. - slub/liszt-common dev-7-upgrade-to-typo3-v12 requires elasticsearch/elasticsearch ^8 -> found elasticsearch/elasticsearch[v8.0.0, ..., v8.15.0] but it conflicts with your root composer.json require (^7). - slub/liszt-common dev-14-add-xslt-conversion requires typo3/cms-core ^11 -> found typo3/cms-core[v11.0.0, ..., v11.5.39] but it conflicts with your root composer.json require (^12). - slub/liszt-common dev-12-upgrade-to-typo3-v13 requires typo3/cms-core ^13 -> found typo3/cms-core[v13.0.0, ..., v13.2.1] but it conflicts with your root composer.json require (^12). - slub/liszt-common[dev-main, dev-test, v0.0.1] require typo3/cms-core ^11.5 -> found typo3/cms-core[v11.5.0, ..., v11.5.39] but it conflicts with your root composer.json require (^12). - illuminate/collections[v11.0.0, ..., v11.23.5] require php ^8.2 -> your php version (8.1.2) does not satisfy that requirement. - Root composer.json requires slub/liszt-common @dev -> satisfiable by slub/liszt-common[dev-test, dev-main, dev-dev, dev-7-upgrade-to-typo3-v12, dev-12-upgrade-to-typo3-v13, dev-14-add-xslt-conversion, v0.0.1].