Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires tightenco/tlint ^9.3 -> satisfiable by tightenco/tlint[v9.3.0, v9.3.1]. - tightenco/tlint[v9.3.0, ..., v9.3.1] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement.