Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/php-code-coverage[10.0.0, ..., 10.1.15] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. - Root composer.json requires phpunit/php-code-coverage ^9.0 || ^10.0 -> satisfiable by phpunit/php-code-coverage[10.0.0, ..., 10.1.15].