#14012 fixed

Author: vishalverma.magento279

app/code/Magento/Sales/Controller/Adminhtml/Order/Invoice/Save.php

@@ -89,13 +89,18 @@ public function __construct(
     protected function _prepareShipment($invoice)
     {
         $invoiceData = $this->getRequest()->getParam('invoice');
-
+        $itemArr = [];
+        if (!isset($invoiceData['items']) || empty($invoiceData['items'])) {
+            $orderItems = $invoice->getOrder()->getItems();
+            foreach ($orderItems as $item) {
+                $itemArr[$item->getId()] = (int)$item->getQtyOrdered();
+            }
+        }
         $shipment = $this->shipmentFactory->create(
             $invoice->getOrder(),
-            isset($invoiceData['items']) ? $invoiceData['items'] : [],
+            isset($invoiceData['items']) ? $invoiceData['items'] : $itemArr,
             $this->getRequest()->getPost('tracking')
         );
-
         if (!$shipment->getTotalQty()) {
             return false;
         }