Your requirements could not be resolved to an installable set of packages. Problem 1 - orchestra/testbench[v6.0.0, ..., v6.2.0] require php >=7.3 -> your php version (7.2.34) does not satisfy that requirement. - orchestra/testbench[v6.3.0, ..., v6.9.0] require php >=7.3 || >=8.0 -> your php version (7.2.34) does not satisfy that requirement. - orchestra/testbench[v6.10.0, ..., v6.42.1] require php ^7.3 || ^8.0 -> your php version (7.2.34) does not satisfy that requirement. - orchestra/testbench[v7.0.0, ..., v7.40.1] require php ^8.0 -> your php version (7.2.34) does not satisfy that requirement. - orchestra/testbench[v8.0.0, ..., v8.21.1] require php ^8.1 -> your php version (7.2.34) does not satisfy that requirement. - Root composer.json requires orchestra/testbench ^6.0 || ^7.0 || ^8.0|^9.0 -> satisfiable by orchestra/testbench[v6.0.0, ..., v6.42.1, v7.0.0, ..., v7.40.1, v8.0.0, ..., v8.21.1].