From c8028bceb075a2d199957a0e9849dfd7a7d5fb15 Mon Sep 17 00:00:00 2001
From: xiangyu <3170102889@zju.edu.cn>
Date: Fri, 5 Aug 2022 17:52:49 +0800
Subject: [PATCH] fix: word count bug

---
 src/views.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/views.ts b/src/views.ts
index cfa23d2..bc3b3d6 100644
--- a/src/views.ts
+++ b/src/views.ts
@@ -906,6 +906,9 @@ class AddonViews extends AddonBase {
     const _window = this._Addon.knowledge.workspaceTabId
       ? window
       : this._Addon.knowledge.getWorkspaceWindow();
+    if (!_window) {
+      return;
+    }
     Zotero.debug("updateWordCount");
 
     const menuitem = _window.document.getElementById(