Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Argument\IteratorArgument' not found in /var/www/typo3/vendor/symfony/dependency-injection/Argument/TaggedIteratorArgument.php:19
Stack trace:
#0 {main}
thrown in /var/www/typo3/vendor/symfony/dependency-injection/Argument/TaggedIteratorArgument.php on line 19