Odoo: V11  Module : Recruitment

Steps:

1) Login to our odoo instance.

2) Click on Recruitment module

3) Click on Applications.

4) Click on "All Applications" and following error.

Error:Odoo Server Error
 
Traceback (most recent call last):  File "/usr/lib/python3/dist-packages/odoo/fields.py", line 936, in __get__
    value = record.env.cache.get(record, self)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 960, in get
    value = self._data[field][record.id][key]
KeyError: (<odoo.sql_db.Cursor object at 0x7f0dd51e52e8>, 9)
 
During handling of the above exception, another exception occurred:

 
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 647, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 307, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 87, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 689, in dispatch
    result = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 339, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 332, in checked_call
    result = self.endpoint(*a, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 933, in __call__
    return self.method(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 512, in response_wrap
    response = f(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 872, in search_read
    return self.do_search_read(model, fields, offset, limit, domain, sort)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 894, in do_search_read
    offset=offset or 0, limit=limit or False, order=sort or False)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 4156, in search_read
    result = records.read(fields)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 2535, in read
    values[name] = field.convert_to_read(record[name], record, use_name_get)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 4675, in __getitem__
    return self._fields[key].__get__(self, type(self))
  File "/usr/lib/python3/dist-packages/odoo/fields.py", line 943, in __get__
    value = record.env.cache.get(record, self)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 960, in get
    value = self._data[field][record.id][key]
KeyError: (<odoo.sql_db.Cursor object at 0x7f0dd51e52e8>, 9)