Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires yiisoft/test-support ^3.0 -> satisfiable by yiisoft/test-support[3.0.0, 3.0.1]. - yiisoft/test-support[3.0.0, ..., 3.0.1] require php ^8.0 -> your php version (7.4.33) does not satisfy that requirement.