Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires friends-of-behat/symfony-extension ^2.6 -> satisfiable by friends-of-behat/symfony-extension[v2.6.0]. - friends-of-behat/symfony-extension v2.6.0 requires symfony/dependency-injection ^6.2 || ^7.0 -> found symfony/dependency-injection[v6.2.0, ..., v6.4.19, v7.0.0, ..., v7.2.4] but these were not loaded, likely because it conflicts with another require. Problem 2 - Root composer.json requires symfony/browser-kit ^7.1 -> satisfiable by symfony/browser-kit[v7.1.0, ..., v7.2.4]. - symfony/browser-kit[v7.1.0, ..., v7.2.4] require symfony/dom-crawler ^6.4|^7.0 -> found symfony/dom-crawler[v6.4.0, ..., v6.4.19, v7.0.0, ..., v7.2.4] but these were not loaded, likely because it conflicts with another require. Problem 3 - Root composer.json requires symfony/debug-bundle ^7.1 -> satisfiable by symfony/debug-bundle[v7.1.0, v7.1.1, v7.1.6, v7.2.0]. - symfony/debug-bundle[v7.1.0, ..., v7.2.0] require symfony/dependency-injection ^6.4|^7.0 -> found symfony/dependency-injection[v6.4.0, ..., v6.4.19, v7.0.0, ..., v7.2.4] but these were not loaded, likely because it conflicts with another require. Problem 4 - Root composer.json requires sylius/sylius ^1.13 -> satisfiable by sylius/sylius[v1.13.0, ..., v1.14.3]. - 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).