refactor(new_sc_flow_2): Fixed error thrown by semgrep

erpnext/subcontracting/doctype/subcontracting_order/subcontracting_order.py

@@ -157,8 +157,7 @@ def validate_service_items(self):
 
 		for service_item in self.service_items:
 			if frappe.get_value("Item", service_item.item_code, "is_stock_item"):
-				msg = f"Service Item {service_item.item_name} must be a non-stock item."
-				frappe.throw(_(msg))
+				frappe.throw(_("Service Item {0} must be a non-stock item.").format(service_item.item_code))
 
 			item = next(
 				item for item in self.items if item.purchase_order_item == service_item.purchase_order_item