改名

System/Events/EventProvider.php

@@ -21,7 +21,7 @@ class EventProvider implements EventProviders
 	{
 		$queue = new \SplPriorityQueue();
 		// TODO: Implement getListenersForEvent() method.
-		foreach ($this->_listeners as $listener) {
+		foreach ($this->_listeners[get_class($event)] ?? [] as $listener) {
 			if (!($event instanceof $listener->event)) {
 				continue;
 			}