[FIX] sale_payment_deposit: fix error in portal payment process

sale_payment_deposit/models/payment.py

@@ -31,3 +31,19 @@ class PaymentTransaction(models.Model):
                         self.amount,
                     )
                 )
+
+    def render_sale_button(self, order, submit_txt=None, render_values=None):
+        values = {
+            'partner_id': order.partner_id.id,
+            'type': self.type,
+        }
+        if render_values:
+            values.update(render_values)
+        # Not very elegant to do that here but no choice regarding the design.
+        self._log_payment_transaction_sent()
+        return self.acquirer_id.with_context(submit_class='btn btn-primary', submit_txt=submit_txt or _('Pay Now')).sudo().render(
+            self.reference,
+            order.amount_total_deposit or order.amount_total,
+            order.pricelist_id.currency_id.id,
+            values=values,
+        )