pos/pos_journal_image/static/src/xml/pos_journal_image.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright (C) 2019-Today GRAP (http://www.grap.coop)
@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-->
<templates id="template" xml:space="preserve">

    <t t-extend="PaymentScreen-Paymentmethods">
        <t t-jquery="[t-esc='cashregister.journal_id[1]']" t-operation="before">
            <img t-att-src="widget.journal_icon_url(cashregister.journal_id[0])"
                class="journal-image"/>
        </t>

    </t>

</templates>