Installation request for toplan/phpsms ~1.8.0-beta -> satisfiable by toplan/phpsms[1.8.0-beta.1].
toplan/phpsms 1.8.0-beta.1 requires toplan/task-balancer ~0.5.0-beta -> satisfiable by toplan/task-balancer[0.5.0-beta.1] but these conflict with your requirements or minimum-stability.
Problem 1