issue magento#19940 fixed

Author: mahesh-rajawat

app/code/Magento/Shipping/Block/Adminhtml/Order/Packaging.php

@@ -86,6 +86,7 @@ public function getConfigDataJson()
         $itemsName = [];
         $itemsWeight = [];
         $itemsProductId = [];
+        $itemsOrderItemId = [];
 
         if ($shipmentId) {
             $urlParams['shipment_id'] = $shipmentId;