Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires laminas/laminas-modulemanager ^2.14.0 -> satisfiable by laminas/laminas-modulemanager[2.14.0]. - laminas/laminas-modulemanager 2.14.0 requires php ~8.0.0 || ~8.1.0 || ~8.2.0 -> your php version (8.3.0RC3) does not satisfy that requirement. Problem 2 - Root composer.json requires laminas/laminas-servicemanager ^3.21 -> satisfiable by laminas/laminas-servicemanager[3.21.0]. - laminas/laminas-servicemanager 3.21.0 requires php ~8.1.0 || ~8.2.0 -> your php version (8.3.0RC3) does not satisfy that requirement. Problem 3 - laminas/laminas-serializer 2.17.0 requires laminas/laminas-json ^3.1 -> satisfiable by laminas/laminas-json[3.1.0, ..., 3.5.0]. - laminas/laminas-serializer[2.14.0, ..., 2.16.2] require php ~8.0.0 || ~8.1.0 || ~8.2.0 -> your php version (8.3.0RC3) does not satisfy that requirement. - laminas/laminas-json[3.4.0, ..., 3.5.0] require php ~8.0.0 || ~8.1.0 || ~8.2.0 -> your php version (8.3.0RC3) does not satisfy that requirement. - laminas/laminas-json[3.1.0, ..., 3.1.3] require php ^5.6 || ^7.0 -> your php version (8.3.0RC3) does not satisfy that requirement. - laminas/laminas-json 3.2.0 requires php ^7.3 || ~8.0.0 -> your php version (8.3.0RC3) does not satisfy that requirement. - laminas/laminas-json 3.3.0 requires php ^7.3 || ~8.0.0 || ~8.1.0 -> your php version (8.3.0RC3) does not satisfy that requirement. - Root composer.json requires laminas/laminas-serializer ^2.14.0 -> satisfiable by laminas/laminas-serializer[2.14.0, ..., 2.17.0]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.