Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires simplesamlphp/simplesamlphp-test-framework ~1.7.7 -> satisfiable by simplesamlphp/simplesamlphp-test-framework[v1.7.7]. - simplesamlphp/simplesamlphp-test-framework v1.7.7 requires php ^8.1 -> your php version (8.0.30) does not satisfy that requirement.