Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit[11.0.0, ..., 11.3.6] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^11.0 -> satisfiable by phpunit/phpunit[11.0.0, ..., 11.3.6].

Process completed with exit code 2.

Your requirements could not be resolved to an installable set of packages. Problem 1 - phpspec/prophecy-phpunit v2.0.0 requires php ^7.3 -> your php version (8.2.23) does not satisfy that requirement. - phpspec/prophecy-phpunit[v2.0.1, ..., v2.0.2] require phpunit/phpunit ^9.1 -> found phpunit/phpunit[9.1.0, ..., 9.6.21] but it conflicts with your root composer.json require (^11.0). - phpspec/prophecy-phpunit v2.1.0 requires phpunit/phpunit ^9.1 || ^10.1 -> found phpunit/phpunit[9.1.0, ..., 9.6.21, 10.1.0, ..., 10.5.35] but it conflicts with your root composer.json require (^11.0). - Root composer.json requires vimeo/psalm ^4.22 -> satisfiable by vimeo/psalm[4.22.0, ..., 4.30.0]. - Root composer.json requires phpspec/prophecy-phpunit ^2.0 -> satisfiable by phpspec/prophecy-phpunit[v2.0.0, ..., v2.2.0]. - phpspec/prophecy-phpunit v2.2.0 requires phpunit/phpunit ^9.1 || ^10.1 || ^11.0 -> satisfiable by phpunit/phpunit[11.0.0, ..., 11.3.6]. - phpunit/phpunit[11.2.7, ..., 11.3.6] require sebastian/diff ^6.0.2 -> satisfiable by sebastian/diff[6.0.2]. - phpunit/phpunit[11.0.0, ..., 11.2.6] require sebastian/diff ^6.0 -> satisfiable by sebastian/diff[6.0.0, 6.0.1, 6.0.2]. - Conclusion: don't install sebastian/diff 6.0.2 (conflict analysis result)

Process completed with exit code 2.