Fatal error: Uncaught Error: Interface "Symfony\Contracts\EventDispatcher\EventDispatcherInterface" not found in /home/maborneapp/public_html/sii/vendor/symfony/event-dispatcher/EventDispatcherInterface.php:23
Stack trace:
#0 {main}
thrown in /home/maborneapp/public_html/sii/vendor/symfony/event-dispatcher/EventDispatcherInterface.php on line 23