From 915170aa700ed3efc9e0b9bc058b868a39875fac Mon Sep 17 00:00:00 2001
From: Vanessa <lly219@gmail.com>
Date: Sun, 30 Jul 2023 12:40:32 +0800
Subject: [PATCH] :bug: fix https://github.com/siyuan-note/siyuan/issues/8849

---
 app/src/protyle/header/Title.ts | 2 +-
 app/src/protyle/util/onGet.ts   | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/src/protyle/header/Title.ts b/app/src/protyle/header/Title.ts
index c228b9802..3931f7686 100644
--- a/app/src/protyle/header/Title.ts
+++ b/app/src/protyle/header/Title.ts
@@ -299,7 +299,7 @@ export class Title {
         if (response.data.ial["custom-riff-decks"]) {
             this.element.setAttribute("custom-riff-decks", response.data.ial["custom-riff-decks"]);
         }
-        protyle.background.render(response.data.ial, protyle.block.rootID);
+        protyle.background?.render(response.data.ial, protyle.block.rootID);
         protyle.wysiwyg.renderCustom(response.data.ial);
         this.editElement.setAttribute("data-render", "true");
         this.setTitle(response.data.ial.title);
diff --git a/app/src/protyle/util/onGet.ts b/app/src/protyle/util/onGet.ts
index 4bfa46559..ec969d83e 100644
--- a/app/src/protyle/util/onGet.ts
+++ b/app/src/protyle/util/onGet.ts
@@ -228,7 +228,9 @@ const setHTML = (options: {
     if (options.isSyncing) {
         disabledForeverProtyle(protyle);
     } else {
-        protyle.breadcrumb.element.nextElementSibling.textContent = "";
+        if (protyle.breadcrumb) {
+            protyle.breadcrumb.element.nextElementSibling.textContent = "";
+        }
         protyle.element.removeAttribute("disabled-forever");
         if (window.siyuan.config.readonly || window.siyuan.config.editor.readOnly) {
             disabledProtyle(protyle);