From a314e90509dba1124ce95a837972560b92d7231a Mon Sep 17 00:00:00 2001
From: emeroad <emeroad@gmail.com>
Date: Fri, 7 Jun 2024 18:26:07 +0900
Subject: [PATCH] [#11050] Fix potential NPE

---
 .../appender/server/DefaultServerInfoAppender.java             | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/web/src/main/java/com/navercorp/pinpoint/web/applicationmap/appender/server/DefaultServerInfoAppender.java b/web/src/main/java/com/navercorp/pinpoint/web/applicationmap/appender/server/DefaultServerInfoAppender.java
index dce7530e6a7e..1603957907d5 100644
--- a/web/src/main/java/com/navercorp/pinpoint/web/applicationmap/appender/server/DefaultServerInfoAppender.java
+++ b/web/src/main/java/com/navercorp/pinpoint/web/applicationmap/appender/server/DefaultServerInfoAppender.java
@@ -144,6 +144,9 @@ private void bind(List<ServerGroupRequest> serverGroupRequest) {
             CompletableFuture<ServerGroupList> future = pair.future();
             try {
                 ServerGroupList serverGroupList = future.getNow(null);
+                if (serverGroupList == null) {
+                    serverGroupList = serverGroupListFactory.createEmptyNodeInstanceList();
+                }
                 node.setServerGroupList(serverGroupList);
             } catch (Throwable th) {
                 logger.warn("Failed to get server info for node {}", node);