Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher" not found in /usr/home/jiexusheng/domains/linuxdo.isgre.at/public_html/vendor/symfony/http-kernel/Debug/TraceableEventDispatcher.php:24
Stack trace:
#0 {main}
  thrown in /usr/home/jiexusheng/domains/linuxdo.isgre.at/public_html/vendor/symfony/http-kernel/Debug/TraceableEventDispatcher.php on line 24