مشکل در نصب phpunit از طریق composer

سلام. وقتی میخوام phpunit رو از طریق composer نصب کنم، دقیقا مثل استاد انجام میدم اما مرحله آخر این ارور میاد:

In BaseCommand.php line 304:                                                                                                          
  [LogicException]                                                                                                                
  Calling getPlatformRequirementFilter from a command which does not define the --ignore-platform-req[s] flags is not permitted.  
                                                                                                                                  
Exception trace:
  at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/src/Composer/Command/BaseCommand.php:304
 Composer\\Command\\BaseCommand->getPlatformRequirementFilter() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/src/Composer/Command/PackageDiscoveryTrait.php:274
 Composer\\Command\\InitCommand->findBestVersionAndNameForPackage() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/src/Composer/Command/PackageDiscoveryTrait.php:241
 Composer\\Command\\InitCommand->determineRequirements() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/src/Composer/Command/InitCommand.php:423
 Composer\\Command\\InitCommand->interact() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/vendor/symfony/console/Command/Command.php:283
 Symfony\\Component\\Console\\Command\\Command->run() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/vendor/symfony/console/Application.php:1015
 Symfony\\Component\\Console\\Application->doRunCommand() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/vendor/symfony/console/Application.php:299
 Symfony\\Component\\Console\\Application->doRun() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/src/Composer/Console/Application.php:334
 Composer\\Console\\Application->doRun() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/vendor/symfony/console/Application.php:171
 Symfony\\Component\\Console\\Application->run() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/src/Composer/Console/Application.php:130
 Composer\\Console\\Application->run() at phar:///usr/local/Cellar/composer/2.3.4/bin/composer/bin/composer:88
 require() at /usr/local/Cellar/composer/2.3.4/bin/composer:29
init [--name NAME] [--description DESCRIPTION] [--author AUTHOR] [--type [TYPE]] [--homepage HOMEPAGE] [--require REQUIRE] [--require-dev REQUIRE-DEV] [-s|--stability STABILITY] [-l|--license LICENSE] [--repository REPOSITORY] [-a|--autoload AUTOLOAD]

/private/var/www/tdd/bug-tracker: composer init Welcome to the Composer config generator This command will guide you through creating your composer.json config. Package name (/) [seyedrezabazyar/bug-tracker]: Description []: Author [seyedrezabazyar , n to skip]: Minimum Stability []: Package Type (e.g. library, project, metapackage, composer-plugin) []: License []: Define your dependencies. Would you like to define your dependencies (require) interactively [yes]? no Would you like to define your dev dependencies (require-dev) interactively [yes]? yes Search for a package: phpunit Found 15 packages matching phpunit [0] phpunit/phpunit [1] phpunit/php-timer [2] phpunit/php-text-template [3] phpunit/php-file-iterator [4] phpunit/php-code-coverage [5] phpunit/phpunit-mock-objects Abandoned. No replacement was suggested. [6] symfony/phpunit-bridge [7] phpunit/php-invoker [8] phpunit/php-token-stream Abandoned. No replacement was suggested. [9] johnkary/phpunit-speedtrap [10] phpstan/phpstan-phpunit [11] jean85/pretty-package-versions [12] brianium/paratest [13] yoast/phpunit-polyfills [14] spatie/phpunit-snapshot-assertions Enter package # to add, or the complete package name if it is not listed: 0 Enter the version constraint to require (or leave blank to use the latest version):