Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires silverstripe/taxonomy ^3 -> satisfiable by silverstripe/taxonomy[3.0.0-beta1, ..., 3.x-dev]. - silverstripe/taxonomy[3.0.0-beta1, ..., 3.1.x-dev] require silverstripe/framework ^5 -> found silverstripe/framework[5.0.0-alpha1, ..., 5.x-dev] but it conflicts with your root composer.json require (^6). - silverstripe/taxonomy[3.2.0-beta1, ..., 3.x-dev] require silverstripe/framework ^5.2 -> found silverstripe/framework[5.2.0-beta1, ..., 5.x-dev] but it conflicts with your root composer.json require (^6).