From 41e127d1d2f82ea879b11a35b92dfb537554193d Mon Sep 17 00:00:00 2001
From: crobibero <cody@robibe.ro>
Date: Wed, 2 Dec 2020 07:42:25 -0700
Subject: [PATCH] Fix null reference when getting filters of an empty library

---
 Jellyfin.Api/Controllers/FilterController.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 31cb9e273..0e1af66dc 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -92,7 +92,12 @@ namespace Jellyfin.Api.Controllers
                 }
             };
 
-            var itemList = ((Folder)item!).GetItemList(query);
+            var itemList = ((Folder?)item)?.GetItemList(query);
+            if (itemList == null)
+            {
+                return new QueryFiltersLegacy();
+            }
+
             return new QueryFiltersLegacy
             {
                 Years = itemList.Select(i => i.ProductionYear ?? -1)