Enable nullable for LibraryManager (#11191)

1 files changed, 3 insertions, 1 deletions

diff --git a/Jellyfin.Api/Helpers/StreamingHelpers.cs b/Jellyfin.Api/Helpers/StreamingHelpers.cs
index ab4826369..d6d7a56eb 100644
--- a/Jellyfin.Api/Helpers/StreamingHelpers.cs
+++ b/Jellyfin.Api/Helpers/StreamingHelpers.cs
@@ -19,6 +19,7 @@ using MediaBrowser.Model.Dlna;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.HttpResults;
 using Microsoft.Net.Http.Headers;
 
 namespace Jellyfin.Api.Helpers;
@@ -108,7 +109,8 @@ public static class StreamingHelpers
                                           ?? state.SupportedSubtitleCodecs.FirstOrDefault();
         }
 
-        var item = libraryManager.GetItemById<BaseItem>(streamingRequest.Id);
+        var item = libraryManager.GetItemById<BaseItem>(streamingRequest.Id)
+            ?? throw new ResourceNotFoundException();
 
         state.IsInputVideo = item.MediaType == MediaType.Video;