Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DataCollector\DataCollector' not found in /var/www/typo3/vendor/symfony/mailer/DataCollector/MessageDataCollector.php:23 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/symfony/mailer/DataCollector/MessageDataCollector.php on line 23