From 786a5bfe2638477576ca2936174cfd83d2d03bba Mon Sep 17 00:00:00 2001
From: Sergey Chebotar <s.chebotar@gmail.com>
Date: Tue, 16 May 2023 17:04:30 +0300
Subject: [PATCH] Fix empty ProductLines field exception on writing

---
 RhSolutions.AddIn/Services/ExcelWriter.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/RhSolutions.AddIn/Services/ExcelWriter.cs b/RhSolutions.AddIn/Services/ExcelWriter.cs
index 4ac4f2b..ab04c50 100644
--- a/RhSolutions.AddIn/Services/ExcelWriter.cs
+++ b/RhSolutions.AddIn/Services/ExcelWriter.cs
@@ -182,7 +182,7 @@ public class ExcelWriter : IWriter, IDisposable
         previous.Copy(current);
         current.ClearContents();
 
-        worksheetCells[row, groupColumn].Value2 = positionAmount.Key.ProductLines.First();
+        worksheetCells[row, groupColumn].Value2 = positionAmount.Key.ProductLines.FirstOrDefault() ?? string.Empty;
         worksheetCells[row, nameColumn].Value2 = positionAmount.Key.Name;
 
         if (_oldSkuCell != null)