From eff06a26d039e966789af6a91cbc05723f2b08b6 Mon Sep 17 00:00:00 2001
From: Iwona Just <iwona@pixelandtonic.com>
Date: Wed, 27 Nov 2024 11:02:22 +0000
Subject: [PATCH 1/2] when duplicating find dynamic folder by duplicateOf
 element

---
 src/fields/Assets.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/fields/Assets.php b/src/fields/Assets.php
index 79cb63d14c5..13a0c356c54 100644
--- a/src/fields/Assets.php
+++ b/src/fields/Assets.php
@@ -945,6 +945,9 @@ private function _findFolder(string $sourceKey, ?string $subpath, ?ElementInterf
         if ($isDynamic) {
             // Prepare the path by parsing tokens and normalizing slashes.
             try {
+                if ($element?->duplicateOf) {
+                    $element = $element->duplicateOf;
+                }
                 $renderedSubpath = Craft::$app->getView()->renderObjectTemplate($subpath, $element);
             } catch (InvalidConfigException|RuntimeError $e) {
                 throw new InvalidSubpathException($subpath, null, 0, $e);

From f7b62f465164dbed2b6af8374505735f078b7b5f Mon Sep 17 00:00:00 2001
From: brandonkelly <brandon@pixelandtonic.com>
Date: Wed, 27 Nov 2024 14:53:35 -0800
Subject: [PATCH 2/2] Release note

[ci skip]
---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 94a66e43c40..9a22f132030 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release Notes for Craft CMS 4
 
+## Unreleased
+
+- Fixed an error that could occur when duplicating an element with an Assets field that had a dynamic subpath. ([#16214](https://github.com/craftcms/cms/issues/16214))
+
 ## 4.13.3 - 2024-11-22
 
 - Element indexes now sort by ID by default, for sources that don’t define a default sort option.