Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires ibexa/taxonomy 4.6.x-dev -> satisfiable by ibexa/taxonomy[4.6.x-dev]. - ibexa/taxonomy 4.6.x-dev requires ibexa/tree-builder ~4.6.x-dev -> found ibexa/tree-builder[4.6.x-dev] but it does not match your minimum-stability. Problem 2 - Root composer.json requires ibexa/storefront 4.6.x-dev -> satisfiable by ibexa/storefront[4.6.x-dev]. - ibexa/storefront 4.6.x-dev requires ibexa/taxonomy ~4.6.x-dev -> satisfiable by ibexa/taxonomy[4.6.x-dev]. - ibexa/taxonomy 4.6.x-dev requires ibexa/tree-builder ~4.6.x-dev -> found ibexa/tree-builder[4.6.x-dev] but it does not match your minimum-stability.