2 files changed, 8 insertions, 2 deletions
diff --git a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
index 4c668379c..fb0a55135 100644
--- a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
@@ -34,7 +34,7 @@ public sealed class LibraryChangedNotifier : IHostedService, IDisposable
     private readonly IUserManager _userManager;
     private readonly ILogger<LibraryChangedNotifier> _logger;
 
-    private readonly object _libraryChangedSyncLock = new();
+    private readonly Lock _libraryChangedSyncLock = new();
     private readonly List<Folder> _foldersAddedTo = new();
     private readonly List<Folder> _foldersRemovedFrom = new();
     private readonly List<BaseItem> _itemsAdded = new();
diff --git a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
index aef02ce6b..fc174b7c1 100644
--- a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
@@ -24,7 +24,7 @@ namespace Emby.Server.Implementations.EntryPoints
         private readonly IUserManager _userManager;
 
         private readonly Dictionary<Guid, List<BaseItem>> _changedItems = new();
-        private readonly object _syncLock = new();
+        private readonly Lock _syncLock = new();
 
         private Timer? _updateTimer;
 
@@ -144,9 +144,15 @@ namespace Emby.Server.Implementations.EntryPoints
                     .Select(i =>
                     {
                         var dto = _userDataManager.GetUserDataDto(i, user);
+                        if (dto is null)
+                        {
+                            return null!;
+                        }
+
                         dto.ItemId = i.Id;
                         return dto;
                     })
+                    .Where(e => e is not null)
                     .ToArray()
             };
         }