ACP2E-4001: Cancel invoice redirects to 404

Author: veloraven

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

@@ -1,15 +1,14 @@
 <?php
 /**
- *
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
+ * Copyright 2014 Adobe
+ * All Rights Reserved.
  */
 namespace Magento\Sales\Controller\Adminhtml\Order\Invoice;
 
-use Magento\Framework\App\Action\HttpPostActionInterface;
+use Magento\Framework\App\Action\HttpGetActionInterface;
 use Magento\Sales\Controller\Adminhtml\Invoice\AbstractInvoice\View;
 
-class Cancel extends View implements HttpPostActionInterface
+class Cancel extends View implements HttpGetActionInterface
 {
     /**
      * Authorization level of a basic admin session