Your requirements could not be resolved to an installable set of packages.
Problem 1
- Root composer.json requires rapidez/core ^3.0, found rapidez/core[dev-feature/load-magento-url-from-website-2.x, ..., dev-bugfix/broken-autocomplete-2.x, 0.1.0, ..., 0.x-dev, 1.0.0, ..., 1.x-dev, 2.0.0, ..., 2.x-dev] but it does not match the constraint.