From 2bac14ada6b3eaf947adfb4b78489fd18c1cf2e6 Mon Sep 17 00:00:00 2001
From: hades <hades@fanraun.com>
Date: Mon, 21 Sep 2020 15:05:04 +0800
Subject: [PATCH] =?UTF-8?q?REPORT-40094=20=E3=80=90=E5=9B=9E=E5=BD=92?=
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---
 .../com/fr/design/mainframe/EastRegionContainerPane.java     | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/designer-base/src/main/java/com/fr/design/mainframe/EastRegionContainerPane.java b/designer-base/src/main/java/com/fr/design/mainframe/EastRegionContainerPane.java
index a273828d84..c7c587563a 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/EastRegionContainerPane.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/EastRegionContainerPane.java
@@ -511,7 +511,10 @@ public class EastRegionContainerPane extends UIEastResizableContainer {
         UIUtil.invokeLaterIfNeeded(new Runnable() {
             @Override
             public void run() {
-                propertyItemMap.get(key).replaceContentPane(pane);
+                PropertyItem item = propertyItemMap.get(key);
+                if (item != null) {
+                    item.replaceContentPane(pane);
+                }
             }
         });
     }