view/adminhtml/layout/pdfgenerator_templates_index.xml
<?xml version="1.0"?>
<!--
/**
* Copyright © EAdesign by Eco Active S.R.L.,All rights reserved.
* See LICENSE for license details.
*/
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<update handle="styles"/>
<body>
<referenceContainer name="content">
<uiComponent name="pdfgenerator_templates_listing"/>
</referenceContainer>
</body>
</page>