500: Internal Server Error

Traceback

Traceback (most recent call last):
  File "C:\Program Files\odoo14-1\server\odoo\addons\base\models\ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 807, in dispatch
    r = self._call_function(**self.params)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 360, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "C:\Program Files\odoo14-1\server\odoo\service\model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 348, in checked_call
    result = self.endpoint(*a, **kw)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 913, in __call__
    return self.method(*args, **kw)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 532, in response_wrap
    response = f(*args, **kw)
  File "C:\Program Files\odoo14-1\server\odoo\addons\website_blog\controllers\main.py", line 178, in blog
    values = self._prepare_blog_values(blogs=blogs, blog=blog, date_begin=date_begin, date_end=date_end, tags=tag, state=state, page=page, search=search)
  File "C:\Program Files\odoo14-1\server\odoo\addons\website_blog\controllers\main.py", line 135, in _prepare_blog_values
    'nav_list': self.nav_list(),
  File "C:\Program Files\odoo14-1\server\odoo\addons\website_blog_customize\controllers\main.py", line 49, in nav_list
    group['jmonth'] = jutils.tojalali(start, pattern='MMMM')
  File "C:\Program Files\odoo14-1\server\odoo\addons\base_customize\models\jutils.py", line 64, in tojalali
    jdatetime.set_locale(FA_LOCALE)
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Program Files\odoo14-1\server\odoo\addons\base\models\ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 807, in dispatch
    r = self._call_function(**self.params)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 360, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "C:\Program Files\odoo14-1\server\odoo\service\model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 348, in checked_call
    result = self.endpoint(*a, **kw)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 913, in __call__
    return self.method(*args, **kw)
  File "C:\Program Files\odoo14-1\server\odoo\http.py", line 532, in response_wrap
    response = f(*args, **kw)
  File "C:\Program Files\odoo14-1\server\odoo\addons\website_blog\controllers\main.py", line 178, in blog
    values = self._prepare_blog_values(blogs=blogs, blog=blog, date_begin=date_begin, date_end=date_end, tags=tag, state=state, page=page, search=search)
  File "C:\Program Files\odoo14-1\server\odoo\addons\website_blog\controllers\main.py", line 135, in _prepare_blog_values
    'nav_list': self.nav_list(),
  File "C:\Program Files\odoo14-1\server\odoo\addons\website_blog_customize\controllers\main.py", line 49, in nav_list
    group['jmonth'] = jutils.tojalali(start, pattern='MMMM')
  File "C:\Program Files\odoo14-1\server\odoo\addons\base_customize\models\jutils.py", line 64, in tojalali
    jdatetime.set_locale(FA_LOCALE)
NameError: name 'jdatetime' is not defined