From 13a0a1be8dfba984c99dbfcce35867849d30b272 Mon Sep 17 00:00:00 2001
From: ChenX <maple6@vip.qq.com>
Date: Wed, 8 Apr 2020 12:21:56 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D:=E6=8B=86=E5=8D=95=E6=8A=A5?=
 =?UTF-8?q?=E9=94=99?=
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---
 src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts b/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts
index 057e7e16a..beefe8a3d 100644
--- a/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts
+++ b/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts
@@ -104,7 +104,7 @@ class LookOverBoardInfosTool
                     for (let objId of ids)
                     {
                         let gd = objId.Object;
-                        if (!gd.IsErase)
+                        if (!gd?.IsErase)
                         {
                             if (gd instanceof CylinderHole)
                                 switch (gd.Type)