MPESA Payment Request - ERP Next POS UnboundLocalError: local variable 'grand_total' referenced before assignment

[bacipher]

Information about bug

Hello, I am loving the system and currently testing it. However, I get the following error while using mpesa payment gateway on POS. I saw a similar issue that was marked as resolved but there was no mention on how it was resolved.

Module

accounts, selling, integrations

Version

Frappe Framework: v15.15.0 (version-15)
ERPNext: v15.14.6 (version-15)

Installation method

manual install

Relevant log output / Stack trace / Full Error Message.

### App Versions

{
	"chat": "0.0.1",
	"erpnext": "15.14.6",
	"frappe": "15.15.0",
	"helpdesk": "0.10.0",
	"hrms": "15.12.0",
	"payments": "0.0.1",
	"webshop": "0.0.1"
}

Route

point-of-sale

Traceback

Traceback (most recent call last):
  File "apps/frappe/frappe/app.py", line 110, in application
    response = frappe.api.handle(request)
  File "apps/frappe/frappe/api/__init__.py", line 49, in handle
    data = endpoint(**arguments)
  File "apps/frappe/frappe/api/v1.py", line 36, in handle_rpc_call
    return frappe.handler.handle()
  File "apps/frappe/frappe/handler.py", line 49, in handle
    data = execute_cmd(cmd)
  File "apps/frappe/frappe/handler.py", line 85, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
  File "apps/frappe/frappe/__init__.py", line 1682, in call
    return fn(*args, **newargs)
  File "apps/frappe/frappe/handler.py", line 326, in run_doc_method
    response = doc.run_method(method)
  File "apps/frappe/frappe/model/document.py", line 955, in run_method
    out = Document.hook(fn)(self, *args, **kwargs)
  File "apps/frappe/frappe/model/document.py", line 1315, in composer
    return composed(self, method, *args, **kwargs)
  File "apps/frappe/frappe/model/document.py", line 1297, in runner
    add_to_return_value(self, fn(self, *args, **kwargs))
  File "apps/frappe/frappe/model/document.py", line 952, in fn
    return method_object(*args, **kwargs)
  File "apps/frappe/frappe/utils/typing_validations.py", line 31, in wrapper
    return func(*args, **kwargs)
  File "apps/erpnext/erpnext/accounts/doctype/pos_invoice/pos_invoice.py", line 656, in create_payment_request
    pay_req = self.get_new_payment_request(pay)
  File "apps/erpnext/erpnext/accounts/doctype/pos_invoice/pos_invoice.py", line 683, in get_new_payment_request
    return make_payment_request(**args)
  File "apps/frappe/frappe/utils/typing_validations.py", line 31, in wrapper
    return func(*args, **kwargs)
  File "apps/erpnext/erpnext/accounts/doctype/payment_request/payment_request.py", line 438, in make_payment_request
    grand_total = get_amount(ref_doc, gateway_account.get("payment_account"))
  File "apps/erpnext/erpnext/accounts/doctype/payment_request/payment_request.py", line 548, in get_amount
    if grand_total > 0:
UnboundLocalError: local variable 'grand_total' referenced before assignment

Request Data

{
	"type": "POST",
	"args": {
		"docs": "{\"name\":\"ACC-PSINV-2024-00004\",\"owner\":\"Administrator\",\"creation\":\"2024-03-01 11:12:34.711636\",\"modified\":\"2024-03-01 11:12:53.315487\",\"modified_by\":\"Administrator\",\"docstatus\":0,\"idx\":0,\"title\":\"John Doe\",\"naming_series\":\"ACC-PSINV-.YYYY.-\",\"customer\":\"John Doe\",\"customer_name\":\"John Doe\",\"pos_profile\":\"Test POS\",\"is_pos\":1,\"is_return\":0,\"update_billed_amount_in_sales_order\":0,\"update_billed_amount_in_delivery_note\":1,\"company\":\"Test (Demo)\",\"posting_date\":\"2024-03-01\",\"posting_time\":\"11:12:53.553423\",\"set_posting_time\":0,\"due_date\":\"2024-03-01\",\"contact_person\":\"John Doe-John Doe\",\"contact_display\":\"John Doe\",\"contact_mobile\":\"727312513\",\"contact_email\":\"\",\"currency\":\"KES\",\"conversion_rate\":1,\"selling_price_list\":\"Hourly Charges\",\"price_list_currency\":\"KES\",\"plc_conversion_rate\":1,\"ignore_pricing_rule\":1,\"set_warehouse\":\"Bungoma - TsTBD\",\"update_stock\":1,\"total_billing_amount\":0,\"total_qty\":1,\"base_total\":50,\"base_net_total\":12.5,\"total\":50,\"net_total\":12.5,\"total_net_weight\":0,\"taxes_and_charges\":\"\",\"tax_category\":\"\",\"base_total_taxes_and_charges\":0,\"total_taxes_and_charges\":0,\"loyalty_points\":0,\"loyalty_amount\":0,\"redeem_loyalty_points\":0,\"apply_discount_on\":\"Grand Total\",\"base_discount_amount\":37.5,\"additional_discount_percentage\":75,\"discount_amount\":37.5,\"base_grand_total\":12.5,\"base_rounding_adjustment\":-0.5,\"base_rounded_total\":12,\"base_in_words\":\"KES Twelve only.\",\"grand_total\":12.5,\"rounding_adjustment\":-0.5,\"rounded_total\":12,\"in_words\":\"KES Twelve only.\",\"total_advance\":0,\"outstanding_amount\":0,\"allocate_advances_automatically\":0,\"base_paid_amount\":12,\"paid_amount\":12,\"base_change_amount\":0,\"change_amount\":0,\"account_for_change_amount\":\"Bungoma Main Stage - KwBD\",\"write_off_amount\":0,\"base_write_off_amount\":0,\"write_off_outstanding_amount_automatically\":0,\"write_off_account\":\"Administrative Expenses - KwBD\",\"write_off_cost_center\":\"Main - KwBD\",\"letter_head\":\"Test\",\"group_same_items\":0,\"language\":\"en\",\"is_discounted\":0,\"status\":\"Draft\",\"debit_to\":\"Debtors - KwBD\",\"party_account_currency\":\"KES\",\"is_opening\":\"No\",\"amount_eligible_for_commission\":12.5,\"commission_rate\":0,\"total_commission\":0,\"doctype\":\"POS Invoice\",\"sales_team\":[],\"items\":[{\"name\":\"a7738cdfd4\",\"owner\":\"Administrator\",\"creation\":\"2024-03-01 11:12:34.711636\",\"modified\":\"2024-03-01 11:12:53.315487\",\"modified_by\":\"Administrator\",\"docstatus\":0,\"idx\":1,\"has_item_scanned\":0,\"item_code\":\"Luggage Deposit Large\",\"item_name\":\"Luggage Deposit Large\",\"description\":\"Luggage Deposit Large\",\"item_group\":\"Services\",\"image\":\"\",\"qty\":1,\"stock_uom\":\"Nos\",\"uom\":\"Nos\",\"conversion_factor\":1,\"stock_qty\":1,\"price_list_rate\":50,\"base_price_list_rate\":50,\"margin_type\":\"\",\"margin_rate_or_amount\":0,\"rate_with_margin\":0,\"discount_percentage\":0,\"discount_amount\":0,\"base_rate_with_margin\":0,\"rate\":50,\"amount\":50,\"base_rate\":50,\"base_amount\":50,\"pricing_rules\":\"\",\"is_free_item\":0,\"grant_commission\":1,\"net_rate\":12.5,\"net_amount\":12.5,\"base_net_rate\":12.5,\"base_net_amount\":12.5,\"delivered_by_supplier\":0,\"income_account\":\"Bungoma Main Stage - KwBD\",\"is_fixed_asset\":0,\"expense_account\":\"Cost of Goods Sold - KwBD\",\"enable_deferred_revenue\":0,\"weight_per_unit\":0,\"total_weight\":0,\"warehouse\":\"KwB Bungoma Main Stage - KwBD\",\"use_serial_batch_fields\":0,\"allow_zero_valuation_rate\":0,\"item_tax_rate\":\"{}\",\"actual_batch_qty\":0,\"actual_qty\":0,\"batch_no\":\"\",\"delivered_qty\":0,\"cost_center\":\"Main - KwBD\",\"page_break\":0,\"parent\":\"ACC-PSINV-2024-00004\",\"parentfield\":\"items\",\"parenttype\":\"POS Invoice\",\"doctype\":\"POS Invoice Item\",\"__unsaved\":1}],\"payment_schedule\":[],\"timesheets\":[],\"taxes\":[],\"payments\":[{\"name\":\"20a167ae1c\",\"owner\":\"Administrator\",\"creation\":\"2024-03-01 11:12:34.711636\",\"modified\":\"2024-03-01 11:12:53.315487\",\"modified_by\":\"Administrator\",\"docstatus\":0,\"idx\":1,\"default\":0,\"mode_of_payment\":\"Bank Draft\",\"amount\":0,\"account\":\"Bank Account - KwBD\",\"type\":\"Bank\",\"base_amount\":0,\"parent\":\"ACC-PSINV-2024-00004\",\"parentfield\":\"payments\",\"parenttype\":\"POS Invoice\",\"doctype\":\"Sales Invoice Payment\",\"__unsaved\":1},{\"name\":\"8e5cec9605\",\"owner\":\"Administrator\",\"creation\":\"2024-03-01 11:12:34.711636\",\"modified\":\"2024-03-01 11:12:53.315487\",\"modified_by\":\"Administrator\",\"docstatus\":0,\"idx\":2,\"default\":0,\"mode_of_payment\":\"Cash\",\"amount\":0,\"account\":\"Cash - KwBD\",\"type\":\"Cash\",\"base_amount\":0,\"parent\":\"ACC-PSINV-2024-00004\",\"parentfield\":\"payments\",\"parenttype\":\"POS Invoice\",\"doctype\":\"Sales Invoice Payment\",\"__unsaved\":1},{\"name\":\"a3484f4840\",\"owner\":\"Administrator\",\"creation\":\"2024-03-01 11:12:34.711636\",\"modified\":\"2024-03-01 11:12:53.315487\",\"modified_by\":\"Administrator\",\"docstatus\":0,\"idx\":3,\"default\":1,\"mode_of_payment\":\"Mpesa-Test Mpesa Live\",\"amount\":12,\"account\":\"Bank Account - KwBD\",\"type\":\"Phone\",\"base_amount\":12,\"parent\":\"ACC-PSINV-2024-00004\",\"parentfield\":\"payments\",\"parenttype\":\"POS Invoice\",\"doctype\":\"Sales Invoice Payment\",\"__unsaved\":1}],\"packed_items\":[],\"pricing_rules\":[],\"advances\":[],\"__onload\":{\"make_payment_via_journal_entry\":0}}",
		"method": "create_payment_request"
	},
	"headers": {},
	"error_handlers": {},
	"url": "/api/method/run_doc_method",
	"request_id": null
}

Response Data

{
	"exception": "UnboundLocalError: local variable 'grand_total' referenced before assignment",
	"exc_type": "UnboundLocalError",
	"_exc_source": "erpnext (app)"
}