From f2503b1eed3cc07b1fb9be92519d7ae81e07890a Mon Sep 17 00:00:00 2001
From: George Mamadashvili <georgemamadashvili@gmail.com>
Date: Thu, 9 May 2024 13:20:27 +0400
Subject: [PATCH] Edit Post: Fix the 'usePaddingAppender' error (#61500)

Co-authored-by: Mamaduka <mamaduka@git.wordpress.org>
Co-authored-by: ellatrix <ellatrix@git.wordpress.org>
---
 .../src/components/visual-editor/use-padding-appender.js  | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/edit-post/src/components/visual-editor/use-padding-appender.js b/packages/edit-post/src/components/visual-editor/use-padding-appender.js
index c091443495740..ff342ded90817 100644
--- a/packages/edit-post/src/components/visual-editor/use-padding-appender.js
+++ b/packages/edit-post/src/components/visual-editor/use-padding-appender.js
@@ -27,7 +27,7 @@ export function usePaddingAppender() {
 					return;
 				}
 
-				// only handle clicks under the last child
+				// Only handle clicks under the last child.
 				const lastChild = node.lastElementChild;
 				if ( ! lastChild ) {
 					return;
@@ -44,6 +44,12 @@ export function usePaddingAppender() {
 					.select( blockEditorStore )
 					.getBlockOrder( '' );
 				const lastBlockClientId = blockOrder[ blockOrder.length - 1 ];
+
+				// Do nothing when only default block appender is present.
+				if ( ! lastBlockClientId ) {
+					return;
+				}
+
 				const lastBlock = registry
 					.select( blockEditorStore )
 					.getBlock( lastBlockClientId );