File: /var/www/vhost/disk-apps/magento.bikenow.co/vendor/magento/module-downloadable/etc/pdf.xml
<?xml version="1.0"?>
<!--
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Sales:etc/pdf_file.xsd">
<renderers>
<page type="invoice">
<renderer product_type="downloadable">Magento\Downloadable\Model\Sales\Order\Pdf\Items\Invoice</renderer>
</page>
<page type="creditmemo">
<renderer product_type="downloadable">Magento\Downloadable\Model\Sales\Order\Pdf\Items\Creditmemo</renderer>
</page>
</renderers>
</config>