fix(india): minor e-invoicing fixes (backport #30553) (#31067)

erpnext/accounts/print_format/gst_e_invoice/gst_e_invoice.html

@@ -1,7 +1,8 @@
 {%- from "templates/print_formats/standard_macros.html" import add_header, render_field, print_value -%}
-{%- set einvoice = json.loads(doc.signed_einvoice) -%}
 
 <div class="page-break">
+	{% if doc.signed_einvoice %}
+	{%- set einvoice = json.loads(doc.signed_einvoice) -%}
 	<div {% if print_settings.repeat_header_footer %} id="header-html" class="hidden-pdf" {% endif %}>
 		{% if letter_head and not no_letterhead %}
 			<div class="letter-head">{{ letter_head }}</div>
@@ -163,4 +164,10 @@
 			</tbody>
 		</table>
 	</div>
-</div>
+	{% else %}
+	<div class="text-center" style="color: #98A1A9; font-size: 14px;">
+		You must generate IRN before you can preview GST E-Invoice.
+	</div>
+	{% endif %}
+</div>
+

erpnext/regional/india/e_invoice/utils.py

@@ -306,7 +306,7 @@ def update_other_charges(tax_row, invoice_value_details, gst_accounts_list, invo
 
 def get_payment_details(invoice):
 	payee_name = invoice.company
-	mode_of_payment = ', '.join([d.mode_of_payment for d in invoice.payments])
+	mode_of_payment = ""
 	paid_amount = invoice.base_paid_amount
 	outstanding_amount = invoice.outstanding_amount