From 8ed50820d60edbb108b5f31302394f5c47a3e33f Mon Sep 17 00:00:00 2001
From: Thomas Klein <thomasklein876@gmail.com>
Date: Fri, 6 Nov 2020 17:25:13 +0100
Subject: [PATCH] fix missing required argument

---
 .../Product/Configuration/Item/ItemResolverComposite.php     | 2 +-
 app/code/Magento/Catalog/etc/di.xml                          | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/code/Magento/Catalog/Model/Product/Configuration/Item/ItemResolverComposite.php b/app/code/Magento/Catalog/Model/Product/Configuration/Item/ItemResolverComposite.php
index 68d0877c6cd66..d8cfb2eff264a 100644
--- a/app/code/Magento/Catalog/Model/Product/Configuration/Item/ItemResolverComposite.php
+++ b/app/code/Magento/Catalog/Model/Product/Configuration/Item/ItemResolverComposite.php
@@ -16,7 +16,7 @@
 class ItemResolverComposite implements ItemResolverInterface
 {
     /** @var string[] */
-    private $itemResolvers = [];
+    private $itemResolvers;
 
     /** @var ItemResolverInterface[] */
     private $itemResolversInstances = [];
diff --git a/app/code/Magento/Catalog/etc/di.xml b/app/code/Magento/Catalog/etc/di.xml
index 8a116282e2578..54eaf9ccde8fc 100644
--- a/app/code/Magento/Catalog/etc/di.xml
+++ b/app/code/Magento/Catalog/etc/di.xml
@@ -1319,4 +1319,9 @@
             </argument>
         </arguments>
     </type>
+    <type name="Magento\Catalog\Model\Product\Configuration\Item\ItemResolverComposite">
+        <arguments>
+            <argument name="itemResolvers" xsi:type="array"/>
+        </arguments>
+    </type>
 </config>