Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^11.2.8 -> satisfiable by phpunit/phpunit[11.2.8]. - phpunit/phpunit 11.2.8 requires php >=8.2 -> your php version (7.4.33) does not satisfy that requirement. Problem 2 - phpspec/prophecy-phpunit v2.2.0 requires phpunit/phpunit ^9.1 || ^10.1 || ^11.0 -> satisfiable by phpunit/phpunit[11.2.8]. - phpspec/prophecy-phpunit[v2.0.0, ..., v2.0.2] require phpunit/phpunit ^9.1 -> found phpunit/phpunit[9.1.0, ..., 9.6.20] but it conflicts with your root composer.json require (^11.2.8). - phpspec/prophecy-phpunit v2.1.0 requires phpunit/phpunit ^9.1 || ^10.1 -> found phpunit/phpunit[9.1.0, ..., 9.6.20, 10.1.0, ..., 10.5.28] but it conflicts with your root composer.json require (^11.2.8). - phpunit/phpunit 11.2.8 requires php >=8.2 -> your php version (7.4.33) does not satisfy that requirement. - Root composer.json requires phpspec/prophecy-phpunit ^2.0 -> satisfiable by phpspec/prophecy-phpunit[v2.0.0, ..., v2.2.0].