Getting Error on Razor Pay Payment Request

Hi, I am getting the following error n Error log , what kind of issue it would be?

Traceback (most recent call last):
File “/home/erp/frappe-bench/apps/frappe/frappe/integrations/doctype/razorpay_settings/razorpay_settings.py”, line 281, in authorize_payment
custom_redirect_to = frappe.get_doc(self.data.reference_doctype,
File “/home/erp/frappe-bench/apps/frappe/frappe/model/document.py”, line 860, in run_method
out = Document.hook(fn)(self, *args, **kwargs)
File “/home/erp/frappe-bench/apps/frappe/frappe/model/document.py”, line 1158, in composer
return composed(self, method, *args, **kwargs)
File “/home/erp/frappe-bench/apps/frappe/frappe/model/document.py”, line 1141, in runner
add_to_return_value(self, fn(self, *args, **kwargs))
File “/home/erp/frappe-bench/apps/frappe/frappe/model/document.py”, line 854, in
fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
File “/home/erp/frappe-bench/apps/erpnext/erpnext/accounts/doctype/payment_request/payment_request.py”, line 300, in on_payment_authorized
self.set_as_paid()
File “/home/erp/frappe-bench/apps/erpnext/erpnext/accounts/doctype/payment_request/payment_request.py”, line 189, in set_as_paid
payment_entry = self.create_payment_entry()
File “/home/erp/frappe-bench/apps/erpnext/erpnext/accounts/doctype/payment_request/payment_request.py”, line 235, in create_payment_entry
payment_entry.insert(ignore_permissions=True)
File “/home/erp/frappe-bench/apps/frappe/frappe/model/document.py”, line 239, in insert
self._validate()
File “/home/erp/frappe-bench/apps/frappe/frappe/model/document.py”, line 493, in _validate
self._validate_mandatory()
File “/home/erp/frappe-bench/apps/frappe/frappe/model/document.py”, line 810, in _validate_mandatory
raise frappe.MandatoryError(’[{doctype}, {name}]: {fields}’.format(
frappe.exceptions.MandatoryError: [Payment Entry, ACC-PAY-2021-03647]: mode_of_payment