Your requirements could not be resolved to an installable set of packages. Problem 1 - symfony/console v6.4.3 requires php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. - nimut/phpunit-merger 2.0.0 requires symfony/console >=2.7 <7.0 -> satisfiable by symfony/console[v6.4.3]. - nimut/phpunit-merger is locked to version 2.0.0 and an update of this package was not requested.

Your requirements could not be resolved to an installable set of packages. Problem 1 - doctrine/instantiator 2.0.0 requires php ^8.1 -> your php version (8.0.30) does not satisfy that requirement. - phpunit/phpunit 9.6.16 requires doctrine/instantiator ^1.3.1 || ^2 -> satisfiable by doctrine/instantiator[2.0.0]. - phpunit/phpunit is locked to version 9.6.16 and an update of this package was not requested.