Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires laminas/laminas-skeleton-installer ^1.3.0 -> satisfiable by laminas/laminas-skeleton-installer[1.3.0]. - laminas/laminas-skeleton-installer 1.3.0 requires php ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0RC1) does not satisfy that requirement. Problem 2 - laminas/laminas-test[4.9.0, ..., 4.10.2] require php ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0RC1) does not satisfy that requirement. - Root composer.json requires laminas/laminas-test ^4.9 -> satisfiable by laminas/laminas-test[4.9.0, 4.10.0, 4.10.1, 4.10.2].