Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit[9.6.0, ..., 9.6.20] require php >=7.3 -> your php version (7.2.34) does not satisfy that requirement. - phpunit/phpunit[10.0.0, ..., 10.5.28] require php >=8.1 -> your php version (7.2.34) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^9.6 || ^10.0 -> satisfiable by phpunit/phpunit[9.6.0, ..., 9.6.20, 10.0.0, ..., 10.5.28].

Process completed with exit code 2.