Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in D:\workspaces\liZiPingBack\vendor\symfony\web-profiler-bundle\EventListener\WebDebugToolbarListener.php:36 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\web-profiler-bundle\EventListener\WebDebugToolbarListener.php on line 36