Fatal error: Could not check compatibility between PHPUnit\Event\Code\TestCollection::getIterator(): PHPUnit\Event\Code\TestCollectionIterator and IteratorAggregate::getIterator(): Traversable, because class PHPUnit\Event\Code\TestCollectionIterator is not available in /home/aplikasiposinfo/public_html/berkahcellular.fixmate.id/vendor/phpunit/phpunit/src/Event/Value/Test/TestCollection.php on line 56