Fatal error: Could not check compatibility between PHPUnit\TextUI\Configuration\GroupCollection::getIterator(): PHPUnit\TextUI\Configuration\GroupCollectionIterator and IteratorAggregate::getIterator(): Traversable, because class PHPUnit\TextUI\Configuration\GroupCollectionIterator is not available in /home/aplikasiposinfo/public_html/hendraphone.fixmate.id/vendor/phpunit/phpunit/src/TextUI/Configuration/Value/GroupCollection.php on line 68