From ebab1e7154b82348cfe37470766f2da1c8a53b04 Mon Sep 17 00:00:00 2001
From: Steph <steph@hashicorp.com>
Date: Tue, 23 Aug 2022 07:05:14 +0200
Subject: [PATCH] nil check first element when expanding upgrade settings

---
 .../containers/kubernetes_cluster_node_pool_resource.go         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/services/containers/kubernetes_cluster_node_pool_resource.go b/internal/services/containers/kubernetes_cluster_node_pool_resource.go
index 611a67904d08..7918f71ec551 100644
--- a/internal/services/containers/kubernetes_cluster_node_pool_resource.go
+++ b/internal/services/containers/kubernetes_cluster_node_pool_resource.go
@@ -918,7 +918,7 @@ func upgradeSettingsForDataSourceSchema() *pluginsdk.Schema {
 
 func expandUpgradeSettings(input []interface{}) *containerservice.AgentPoolUpgradeSettings {
 	setting := &containerservice.AgentPoolUpgradeSettings{}
-	if len(input) == 0 {
+	if len(input) == 0 || input[0] == nil {
 		return setting
 	}