Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires shopware/conflicts ~0.2.0 -> satisfiable by shopware/conflicts[0.2.0]. - Root composer.json requires shopware/storefront 6.6.x-dev -> satisfiable by shopware/storefront[6.6.x-dev (alias of dev-trunk)]. - shopware/conflicts 0.2.0 conflicts with twig/twig v3.18.0. - shopware/storefront dev-trunk requires twig/twig ^3.18.0 -> satisfiable by twig/twig[v3.18.0, 3.x-dev]. - shopware/storefront 6.6.x-dev is an alias of shopware/storefront dev-trunk and thus requires it to be installed too.