From f88d4daa7ad2cbb286b7a46e34f462f7802c02c7 Mon Sep 17 00:00:00 2001
From: why520crazy <why520crazy@163.com>
Date: Sun, 18 Sep 2016 18:21:08 +0800
Subject: [PATCH] fix bug when drag error

---
 Sortable.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Sortable.js b/Sortable.js
index 5a5ee7d4c..d7a43a7cf 100644
--- a/Sortable.js
+++ b/Sortable.js
@@ -605,7 +605,7 @@
 
 			//如果拖动的目标区域 accept 设置了, 当前拖拽元素不满足,直接返回
 			if (activeGroup && activeGroup.name === group.name
-				&& evt.rootEl[expando].options.accept
+				&& evt.rootEl && evt.rootEl[expando] && evt.rootEl[expando].options.accept
 				&& !_matches(dragEl, evt.rootEl[expando].options.accept)) {
 				return;
 			}