From 736d7c4a5f60df9000f1e7eddc0fd2e1a5ea654e Mon Sep 17 00:00:00 2001
From: Michael Bucari-Tovo <mbucari1@gmail.com>
Date: Thu, 17 Aug 2023 11:29:42 -0600
Subject: [PATCH] Fix NRE when item has no category ladders (#715)

---
 Source/DtoImporterService/CategoryImporter.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/DtoImporterService/CategoryImporter.cs b/Source/DtoImporterService/CategoryImporter.cs
index c8605870..d4c81ed2 100644
--- a/Source/DtoImporterService/CategoryImporter.cs
+++ b/Source/DtoImporterService/CategoryImporter.cs
@@ -23,9 +23,11 @@ namespace DtoImporterService
 			loadLocal_categories();
 
 			// upsert
+			//Import item may not have no (null) categories
 			var categoryLadders = importItems
+				.Where(i => i.DtoItem.CategoryLadders is not null)
 				.SelectMany(i => i.DtoItem.CategoryLadders)
-				.Select(cl => cl.Ladder)
+				.Select(cl => cl?.Ladder)
 				.Where(l => l?.Length > 0)
 				.ToList();