Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/options-resolver ^7.1 -> satisfiable by symfony/options-resolver[v7.1.0-BETA1, ..., 7.2.x-dev]. - symfony/options-resolver[v7.1.0-BETA1, ..., 7.2.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 2 - Root composer.json requires chiiya/code-style-php ^3.0 -> satisfiable by chiiya/code-style-php[3.0.0, 3.0.1]. - chiiya/code-style-php[3.0.0, ..., 3.0.1] require php ^8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 3 - Root composer.json requires phpunit/phpunit ^11.2 -> satisfiable by phpunit/phpunit[11.2.0, 11.2.x-dev, 11.3.x-dev]. - phpunit/phpunit[11.2.0, ..., 11.3.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 4 - Root composer.json requires symfony/var-dumper ^7.1 -> satisfiable by symfony/var-dumper[v7.1.0-BETA1, ..., 7.2.x-dev]. - symfony/var-dumper[v7.1.0-BETA1, ..., 7.2.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 5 - symfony/options-resolver[v7.1.0-BETA1, ..., 7.2.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. - phpro/grumphp[v2.5.0, ..., v2.x-dev] require symfony/options-resolver ^5.4 || ^6.0 || ^7.0 -> satisfiable by symfony/options-resolver[v7.1.0-BETA1, ..., 7.2.x-dev]. - Root composer.json requires phpro/grumphp ^2.5 -> satisfiable by phpro/grumphp[v2.5.0, v2.x-dev].

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