Fatal error: Could not check compatibility between PHPUnit\TextUI\Configuration\ConstantCollection::getIterator(): PHPUnit\TextUI\Configuration\ConstantCollectionIterator and IteratorAggregate::getIterator(): Traversable, because class PHPUnit\TextUI\Configuration\ConstantCollectionIterator is not available in /home/aplikasiposinfo/public_html/portal-demo-app/vendor/phpunit/phpunit/src/TextUI/Configuration/Value/ConstantCollection.php on line 56