From c38e0281838453dfd20c3c437110c56ee4c1fdf2 Mon Sep 17 00:00:00 2001
From: "Aaron (Qilong)" <aaron.tang@autodesk.com>
Date: Fri, 6 Oct 2023 15:45:44 -0400
Subject: [PATCH] Null check

---
 src/DynamoCoreWpf/ViewModels/Core/WorkspaceViewModel.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/DynamoCoreWpf/ViewModels/Core/WorkspaceViewModel.cs b/src/DynamoCoreWpf/ViewModels/Core/WorkspaceViewModel.cs
index 8a8d870af88..2c410c077f4 100644
--- a/src/DynamoCoreWpf/ViewModels/Core/WorkspaceViewModel.cs
+++ b/src/DynamoCoreWpf/ViewModels/Core/WorkspaceViewModel.cs
@@ -573,7 +573,7 @@ public override void Dispose()
             Errors.Clear();
             Annotations.Clear();
             InCanvasSearchViewModel?.Dispose();
-            NodeAutoCompleteSearchViewModel.LuceneUtility.DisposeAll();
+            NodeAutoCompleteSearchViewModel.LuceneUtility?.DisposeAll();
             NodeAutoCompleteSearchViewModel?.Dispose();
         }