Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ^8.1 but your php version (8.0.30) does not satisfy that requirement. Problem 2 - Root composer.json requires spatie/phpunit-snapshot-assertions ^5.1.4 -> satisfiable by spatie/phpunit-snapshot-assertions[5.1.4]. - spatie/phpunit-snapshot-assertions 5.1.4 requires php ^8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 3 - phpunit/phpunit[10.0.0, ..., 10.5.x-dev] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^10.0.0 -> satisfiable by phpunit/phpunit[10.0.0, ..., 10.5.x-dev].