Your requirements could not be resolved to an installable set of packages. Problem 1 - 10up/wp_mock 0.4.2 requires php >=7.1 -> your php version (7.0.33) does not satisfy that requirement. - 10up/wp_mock 0.5.0 requires php >=7.3 < 9.0 -> your php version (7.0.33) does not satisfy that requirement. - 10up/wp_mock 1.0.0 requires php >=7.4 < 8.3 -> your php version (7.0.33) does not satisfy that requirement. - 10up/wp_mock 1.0.1 requires php >=7.4 < 9 -> your php version (7.0.33) does not satisfy that requirement. - Root composer.json requires 10up/wp_mock 0.4.2 - 1.0.1 -> satisfiable by 10up/wp_mock[0.4.2, 0.5.0, 1.0.0, 1.0.1].