Your requirements could not be resolved to an installable set of packages. Problem 1 - netgen/ibexa-site-api[dev-master, dev-add_url_object, 5.0.0, ..., 5.3.x-dev] require netgen/ibexa-search-extra ^3.0 -> satisfiable by netgen/ibexa-search-extra[dev-master, 3.0.0, 3.1.x-dev (alias of dev-master)] from composer repo (https://repo.packagist.org) but netgen/ibexa-search-extra is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - netgen/ibexa-site-api 5.3.x-dev is an alias of netgen/ibexa-site-api dev-master and thus requires it to be installed too. - Root composer.json requires netgen/ibexa-site-api @dev -> satisfiable by netgen/ibexa-site-api[dev-master, dev-add_url_object, 5.0.0, ..., 5.3.x-dev (alias of dev-master)].

Process completed with exit code 2.