Fatal error: Uncaught ReflectionException: Class Psr\SimpleCache\CacheInterface does not exist in /var/www/typo3/vendor/symfony/cache/Psr16Cache.php:22 Stack trace: #0 /var/www/typo3/vendor/symfony/cache/Psr16Cache.php(22): ReflectionMethod->__construct('Psr\\SimpleCache...', 'get') #1 {main} thrown in /var/www/typo3/vendor/symfony/cache/Psr16Cache.php on line 22