From ed3bb8a7510693d85dfdc3879a3074751ee1330e Mon Sep 17 00:00:00 2001
From: KMY <tt@kmycode.net>
Date: Fri, 15 Sep 2023 18:52:26 +0900
Subject: [PATCH] Fix error when remove from bookmark category

---
 app/javascript/mastodon/reducers/bookmark_categories.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/app/javascript/mastodon/reducers/bookmark_categories.js b/app/javascript/mastodon/reducers/bookmark_categories.js
index 3877303b12..ea9e4f4895 100644
--- a/app/javascript/mastodon/reducers/bookmark_categories.js
+++ b/app/javascript/mastodon/reducers/bookmark_categories.js
@@ -65,7 +65,10 @@ const appendToBookmarkCategoryStatusesById = (state, bookmarkCategoryId, statuse
 };
 
 const removeStatusFromBookmarkCategoryById = (state, bookmarkCategoryId, status) => {
-  return state.updateIn([bookmarkCategoryId, 'items'], items => items.delete(status));
+  if (state.getIn([bookmarkCategoryId, 'items'])) {
+    return state.updateIn([bookmarkCategoryId, 'items'], items => items.delete(status));
+  }
+  return state;
 };
 
 const removeStatusFromAllBookmarkCategories = (state, status) => {