Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires shopware/administration 6.5.x-dev -> satisfiable by shopware/administration[6.5.x-dev]. - shopware/administration 6.5.x-dev requires shopware/core dev-6.5.x -> found shopware/core[dev-trunk, dev-6.0+ea, v6.0.0+ea2, ..., 6.6.x-dev (alias of dev-trunk)] but it does not match the constraint. Problem 2 - Root composer.json requires shopware/elasticsearch 6.5.x-dev -> satisfiable by shopware/elasticsearch[6.5.x-dev]. - shopware/elasticsearch 6.5.x-dev requires shopware/core dev-6.5.x -> found shopware/core[dev-trunk, dev-6.0+ea, v6.0.0+ea2, ..., 6.6.x-dev (alias of dev-trunk)] but it does not match the constraint. Problem 3 - Root composer.json requires shopware/storefront 6.5.x-dev -> satisfiable by shopware/storefront[6.5.x-dev]. - shopware/storefront 6.5.x-dev requires shopware/core dev-6.5.x -> found shopware/core[dev-trunk, dev-6.0+ea, v6.0.0+ea2, ..., 6.6.x-dev (alias of dev-trunk)] but it does not match the constraint.