From d4202897e16e94adfd8dcc73c4475068c85b9b9e Mon Sep 17 00:00:00 2001
From: Kassian Sun <kassiansun@outlook.com>
Date: Fri, 19 May 2023 11:58:58 +0800
Subject: [PATCH] [migration][util] handle nil slice without error log

---
 plugin/migration/util/util.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugin/migration/util/util.go b/plugin/migration/util/util.go
index 19719674..91d11a8a 100644
--- a/plugin/migration/util/util.go
+++ b/plugin/migration/util/util.go
@@ -89,6 +89,9 @@ func GetMapStringSliceValue(m util.MapStr, key string) []string {
 	if err != nil {
 		return nil
 	}
+	if v == nil {
+		return nil
+	}
 	vv, ok := v.([]string)
 	if !ok {
 		vv, ok := v.([]interface{})