Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires pimcore/pimcore 11.x-dev as 11.99.9 (exact version match), found pimcore/pimcore[dev-temp-fix-doctrine-migrations, ..., dev-poc_capture_node, 2.2.0, 2.2.1, 2.2.2, 2.3.0, 3.0.0, ..., 3.1.1, 4.0.0, ..., 4.6.5, v5.0.0-RC, ..., v5.8.9, v6.0.0, ..., v6.9.6, v10.0.0-BETA1, ..., v10.6.9, v11.0.0-ALPHA1, ..., 11.5.x-dev, 12.x-dev] but it does not match the constraint. Problem 2 - Root composer.json requires pimcore/generic-data-index-bundle @dev -> satisfiable by pimcore/generic-data-index-bundle[1.x-dev]. - pimcore/generic-data-index-bundle 1.x-dev requires pimcore/pimcore ^11.5 -> found pimcore/pimcore[v11.5.0-RC1, ..., 11.5.x-dev] but it conflicts with your root composer.json require (11.x-dev as 11.99.9).