Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage' not found in /var/www/typo3/vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php:26
Stack trace:
#0 {main}
thrown in /var/www/typo3/vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php on line 26