Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\ParameterBag\ParameterBag' not found in /var/www/typo3/vendor/symfony/dependency-injection/ParameterBag/EnvPlaceholderParameterBag.php:20 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/symfony/dependency-injection/ParameterBag/EnvPlaceholderParameterBag.php on line 20