Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires sylius/sylius ^1.12 -> satisfiable by sylius/sylius[v1.12.0, ..., v1.14.3]. - sylius/sylius[v1.12.0, ..., v1.12.19] require symfony/intl ^5.4 || ^6.0 -> found symfony/intl[v5.4.0, ..., v5.4.47, v6.0.0, ..., v6.4.15] but it conflicts with your root composer.json require (^7.1). - sylius/sylius[v1.13.0, ..., v1.14.3] require symfony/intl ^5.4.21 || ^6.4 -> found symfony/intl[v5.4.21, ..., v5.4.47, v6.4.0, ..., v6.4.15] but it conflicts with your root composer.json require (^7.1).