From 1d40c9ac45d7fe3d1a490adad6603b4142e926a7 Mon Sep 17 00:00:00 2001
From: Wouter Samaey <wouter.samaey@storefront.be>
Date: Fri, 9 Jun 2017 10:06:06 +0200
Subject: [PATCH 1/2] Improved error logging: original exception was not passed
 as $cause

---
 app/code/Magento/Catalog/Model/ProductRepository.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/Magento/Catalog/Model/ProductRepository.php b/app/code/Magento/Catalog/Model/ProductRepository.php
index ceacfea5ec020..c91ae62544615 100644
--- a/app/code/Magento/Catalog/Model/ProductRepository.php
+++ b/app/code/Magento/Catalog/Model/ProductRepository.php
@@ -634,7 +634,7 @@ public function save(\Magento\Catalog\Api\Data\ProductInterface $product, $saveO
         } catch (LocalizedException $e) {
             throw $e;
         } catch (\Exception $e) {
-            throw new \Magento\Framework\Exception\CouldNotSaveException(__('Unable to save product'));
+            throw new \Magento\Framework\Exception\CouldNotSaveException(__('Unable to save product'), $e);
         }
         unset($this->instances[$product->getSku()]);
         unset($this->instancesById[$product->getId()]);

From fdb0c7f401033b0c1d839abb539a592035fdd588 Mon Sep 17 00:00:00 2001
From: Wouter Samaey <wouter.samaey@storefront.be>
Date: Fri, 9 Jun 2017 11:11:34 +0200
Subject: [PATCH 2/2] Added missing logging when saving a product fails

---
 app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php b/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php
index d307055f22bbf..5a83fa3e34fa8 100644
--- a/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php
+++ b/app/code/Magento/Catalog/Controller/Adminhtml/Product/Save.php
@@ -144,6 +144,7 @@ public function execute()
                     $this->messageManager->addSuccess(__('You duplicated the product.'));
                 }
             } catch (\Magento\Framework\Exception\LocalizedException $e) {
+                $this->_objectManager->get(\Psr\Log\LoggerInterface::class)->critical($e);
                 $this->messageManager->addError($e->getMessage());
                 $this->getDataPersistor()->set('catalog_product', $data);
                 $redirectBack = $productId ? true : 'new';