Fatal error: Could not check compatibility between PHPUnit\Event\TestData\TestDataCollection::getIterator(): PHPUnit\Event\TestData\TestDataCollectionIterator and IteratorAggregate::getIterator(): Traversable, because class PHPUnit\Event\TestData\TestDataCollectionIterator is not available in /home/aplikasiposinfo/public_html/vancell.fixmate.id/vendor/phpunit/phpunit/src/Event/Value/Test/TestData/TestDataCollection.php on line 82