Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires pelago/emogrifier ^6.0 -> satisfiable by pelago/emogrifier[v6.0.0]. - pelago/emogrifier v6.0.0 requires php ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 -> your php version (8.2; overridden via config.platform, actual: 8.2.8) does not satisfy that requirement. Problem 2 - Root composer.json requires silverstripe/installer 5.0.x-dev -> satisfiable by silverstripe/installer[5.0.x-dev]. - silverstripe/installer 5.0.x-dev requires silverstripe/recipe-cms 5.0.x-dev -> found silverstripe/recipe-cms[5.0.x-dev] but it conflicts with your root composer.json require (^4.4). Problem 3 - symbiote/silverstripe-gridfieldextensions[3.2.0, ..., 3.x-dev] require silverstripe/vendor-plugin ^1.0 -> found silverstripe/vendor-plugin[1.0.0, ..., 1.x-dev] but it conflicts with your root composer.json require (^2). - Root composer.json requires symbiote/silverstripe-gridfieldextensions ^3.2 -> satisfiable by symbiote/silverstripe-gridfieldextensions[3.2.0, ..., 3.x-dev].