Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires react-parallel/infinite-pool dev-f902980088eaedca73d7bf492d63d1297e80f795 -> satisfiable by react-parallel/infinite-pool[dev-f902980088eaedca73d7bf492d63d1297e80f795]. - react-parallel/infinite-pool dev-f902980088eaedca73d7bf492d63d1297e80f795 requires react-parallel/contracts dev-master as 2.0 -> found react-parallel/contracts[dev-master] but it does not match your minimum-stability.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires react-parallel/infinite-pool dev-50/merge, found react-parallel/infinite-pool[dev-f902980088eaedca73d7bf492d63d1297e80f795] but it does not match the constraint.