Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in D:\svn\blog\vendor\symfony\http-kernel\EventListener\DisallowRobotsIndexingListener.php:23
Stack trace:
#0 {main}
thrown in D:\svn\blog\vendor\symfony\http-kernel\EventListener\DisallowRobotsIndexingListener.php on line 23