From 4753f92fe1652aa837bac2547c5908745a205a0d Mon Sep 17 00:00:00 2001
From: Kevin Ansfield <kevin@lookingsideways.co.uk>
Date: Wed, 9 May 2018 10:23:30 +0100
Subject: [PATCH] Koenig - Fix error on backspace with heading as first section

---
 ghost/admin/lib/koenig-editor/addon/components/koenig-editor.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ghost/admin/lib/koenig-editor/addon/components/koenig-editor.js b/ghost/admin/lib/koenig-editor/addon/components/koenig-editor.js
index e6d4212e80..e4b27448e9 100644
--- a/ghost/admin/lib/koenig-editor/addon/components/koenig-editor.js
+++ b/ghost/admin/lib/koenig-editor/addon/components/koenig-editor.js
@@ -659,7 +659,7 @@ export default Component.extend({
 
         // if cursor is at the beginning of a heading and previous section is a
         // blank paragraph, delete the blank paragraph
-        if (isCollapsed && offset === 0 && section.tagName.match(/^h\d$/) && section.prev.tagName === 'p' && section.prev.isBlank) {
+        if (isCollapsed && offset === 0 && section.tagName.match(/^h\d$/) && section.prev && section.prev.tagName === 'p' && section.prev.isBlank) {
             editor.run((postEditor) => {
                 postEditor.removeSection(section.prev);
             });