From b14c3a0ef8924ac98c513d212ed64cb67fc06b29 Mon Sep 17 00:00:00 2001
From: Maksim Strebkov <257byte@gmail.com>
Date: Sun, 14 Jul 2024 22:11:02 +0300
Subject: [PATCH] Fix SelectionSingleConverter on empty response

---
 Tzkt.Api/Utils/Converters/SelectionSingleConverter.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Tzkt.Api/Utils/Converters/SelectionSingleConverter.cs b/Tzkt.Api/Utils/Converters/SelectionSingleConverter.cs
index 33b8f7fc..4315e9b9 100644
--- a/Tzkt.Api/Utils/Converters/SelectionSingleConverter.cs
+++ b/Tzkt.Api/Utils/Converters/SelectionSingleConverter.cs
@@ -15,7 +15,7 @@ public override void Write(Utf8JsonWriter writer, SelectionSingleResponse value,
             writer.WriteStartObject();
             for (int j = 0; j < value.Cols.Length; j++)
             {
-                if (value.Vals[j] == null)
+                if (value.Vals?[j] == null)
                     writer.WriteNull(value.Cols[j]);
                 else
                 {