From add29887895feeb4b11051aebb70086c55352b4a Mon Sep 17 00:00:00 2001
From: Bogdan <mynameisbogdan@users.noreply.github.com>
Date: Wed, 20 Sep 2023 02:54:25 +0300
Subject: [PATCH] Fixed: (Cardigann) Fallback variables to empty string to
 prevent NullRef

---
 .../Indexers/Definitions/Cardigann/CardigannBase.cs             | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannBase.cs b/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannBase.cs
index 7123b3d86..70cec36f6 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannBase.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannBase.cs
@@ -374,7 +374,7 @@ namespace NzbDrone.Core.Indexers.Definitions.Cardigann
                 var newvalue = reReplaceRegexMatches.Groups[3].Value;
 
                 var replaceRegex = new Regex(regexp);
-                var input = (string)variables[variable];
+                var input = (string)variables[variable] ?? string.Empty;
                 var expanded = replaceRegex.Replace(input, newvalue);
 
                 if (modifier != null)