From ac40d43e4a51ad235b4817d09f28cb50869c13a1 Mon Sep 17 00:00:00 2001
From: Wojtek Naruniec <wojtek@mediotype.com>
Date: Mon, 11 Feb 2019 13:45:13 +0100
Subject: [PATCH] Add missing attributes initialization to avoid throwing
 foreach error

---
 app/code/Magento/Eav/Model/Form.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/code/Magento/Eav/Model/Form.php b/app/code/Magento/Eav/Model/Form.php
index c8c50521f5509..1d867109aaf38 100644
--- a/app/code/Magento/Eav/Model/Form.php
+++ b/app/code/Magento/Eav/Model/Form.php
@@ -323,6 +323,8 @@ public function getAttributes()
         if ($this->_attributes === null) {
             $this->_attributes = [];
             $this->_userAttributes = [];
+            $this->_systemAttributes = [];
+            $this->_allowedAttributes = [];
             /** @var $attribute \Magento\Eav\Model\Attribute */
             foreach ($this->_getFilteredFormAttributeCollection() as $attribute) {
                 $this->_attributes[$attribute->getAttributeCode()] = $attribute;