Error when showing invoice of project time/material

Within the Project plugin,

1. Screenshot 1, create an invoice after entering and completing timesheet/time-entry. Hourly rate is set under Accounting/GL.
2. Screenshot 2, generate invoice.
3. Screenshot 3, errors happen when showing overview of the invoice.

Reproduced in local environment. When commenting out the “timeEntries” section in the InvoiceScreens.xml, the issue seems to go away …

<!-- section>
    <condition>
        <not><if-empty field="timeEntries"/></not>
    </condition>
    <widgets>
        <screenlet title="${uiLabelMap.AccountingInvoiceTimeEntries}" navigation-form-name="ListTimeEntries">
            <include-form name="ListTimeEntries" location="component://accounting/widget/InvoiceForms.xml"/>
        </screenlet>
    </widgets>
</section -->