Fatal error: Uncaught Error: Class 'TYPO3\CMS\Core\Core\SystemEnvironmentBuilder' not found in /var/www/nan-minisites/public/index.php:19
Stack trace:
#0 /var/www/nan-minisites/public/index.php(21): {closure}()
#1 {main}
thrown in /var/www/nan-minisites/public/index.php on line 19