Monthly Attendance Sheet Year Drop Down

Hi
The year drop down not showing any years at all!! Just blank field …Also I got this error AttributeError: ‘int’ object has no attribute ‘year’

App Versions

{
	"erpnext": "14.0.0-beta.6",
	"frappe": "14.0.0-beta.5"
}

Route

query-report/Monthly Attendance Sheet

Trackeback

Traceback (most recent call last):
  File "apps/frappe/frappe/app.py", line 68, in application
    response = frappe.api.handle()
  File "apps/frappe/frappe/api.py", line 54, in handle
    return frappe.handler.handle()
  File "apps/frappe/frappe/handler.py", line 45, in handle
    data = execute_cmd(cmd)
  File "apps/frappe/frappe/handler.py", line 83, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
  File "apps/frappe/frappe/__init__.py", line 1574, in call
    return fn(*args, **newargs)
  File "apps/erpnext/erpnext/hr/report/monthly_attendance_sheet/monthly_attendance_sheet.py", line 577, in get_attendance_years
    return "\n".join(cstr(entry.year) for entry in year_list)
  File "apps/erpnext/erpnext/hr/report/monthly_attendance_sheet/monthly_attendance_sheet.py", line 577, in <genexpr>
    return "\n".join(cstr(entry.year) for entry in year_list)
AttributeError: 'int' object has no attribute 'year'

Request Data

{
	"type": "POST",
	"args": {},
	"headers": {},
	"error_handlers": {},
	"url": "/api/method/erpnext.hr.report.monthly_attendance_sheet.monthly_attendance_sheet.get_attendance_years"
}

Response Data

{
	"exception": "AttributeError: 'int' object has no attribute 'year'"
}