Invalid XML for view

Hola, estaba instalando un módulo desarrollado por un tercero y me apareció el siguiente error que no logro entender a qué se refiere:

trytond.ir.ui.view.XMLError: Invalid XML for view "account.invoice (account.invoice (Form))". - <string>:40:0:ERROR:RELAXNGV:RELAXNG_ERR_INVALIDATTR: Invalid attribute rowspan for element field

[.....]

Exception: Error In tag record model ir.ui.view with id account_xxx.invoice_view_form.

In the mentioned view there is an element which has a rowspan attribute which is not supported by tryton.

Removing such attribute should fix the issue.