Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires roave/infection-static-analysis-plugin ^1.34 -> satisfiable by roave/infection-static-analysis-plugin[1.34.0, ..., 1.36.x-dev]. - roave/infection-static-analysis-plugin[1.34.0, ..., 1.36.x-dev] require php ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0-dev) does not satisfy that requirement.