Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\HttpCache\AbstractSurrogate' not found in /home/app/htdocs/ninja/vendor/symfony/http-kernel/HttpCache/Ssi.php:22
Stack trace:
#0 {main}
thrown in /home/app/htdocs/ninja/vendor/symfony/http-kernel/HttpCache/Ssi.php on line 22