From 6b5700b3947ea23e5be7cede8fb7d53f50e4370a Mon Sep 17 00:00:00 2001
From: zyy <1787816799@qq.com>
Date: Wed, 4 Nov 2020 13:20:12 +0800
Subject: [PATCH] =?UTF-8?q?=E8=B0=83=E6=95=B4=E6=8A=A5=E9=94=99?=
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---
 src/iscs/shape/group.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/iscs/shape/group.js b/src/iscs/shape/group.js
index 984be25f6..f7413cfad 100644
--- a/src/iscs/shape/group.js
+++ b/src/iscs/shape/group.js
@@ -21,7 +21,7 @@ export default class rect extends Group {
     create() {
         let rect = null;
         for (const key in this.model.elemMap) {
-            if (Vue.prototype.$iscs.iscsDevice[key].instance) {
+            if (Vue.prototype.$iscs.iscsDevice[key] && Vue.prototype.$iscs.iscsDevice[key].instance) {
                 if (!rect) {
                     rect = Vue.prototype.$iscs.iscsDevice[key].instance.getBoundingRect();
                 } else {