I had a problem in my PC then I installed new operating System (windows 8) i faced problem in restoring my backuped data base which I allready saved it in Drive D .. when I was trying to restore it .. i faced aproblem when opening my system an error appeared : Traceback (most recent call last):     File "C:\Program Files\Odoo 10.0\server\odoo\http.py", line 640, in _handle_exception

  File "C:\Program Files\Odoo 10.0\server\odoo\http.py", line 677, in dispatch
  File "C:\Program Files\Odoo 10.0\server\odoo\http.py", line 333, in _call_function
  File "C:\Program Files\Odoo 10.0\server\odoo\service\model.py", line 101, in wrapper
  File "C:\Program Files\Odoo 10.0\server\odoo\http.py", line 326, in checked_call
  File "C:\Program Files\Odoo 10.0\server\odoo\http.py", line 935, in __call__
  File "C:\Program Files\Odoo 10.0\server\odoo\http.py", line 506, in response_wrap
  File "C:\Program Files\Odoo 10.0\server\odoo\addons\web\controllers\main.py", line 1154, in load
  File "C:\Program Files\Odoo 10.0\server\odoo\addons\base\ir\ir_actions.py", line 317, in read
  File "C:\Program Files\Odoo 10.0\server\odoo\models.py", line 3021, in read
  File "C:\Program Files\Odoo 10.0\server\odoo\models.py", line 5210, in __getitem__
  File "C:\Program Files\Odoo 10.0\server\odoo\fields.py", line 870, in __get__
  File "C:\Program Files\Odoo 10.0\server\odoo\fields.py", line 982, in determine_value
  File "C:\Program Files\Odoo 10.0\server\odoo\fields.py", line 936, in compute_value
  File "C:\Program Files\Odoo 10.0\server\odoo\fields.py", line 927, in _compute_value
  File "C:\Program Files\Odoo 10.0\server\odoo\addons\base\ir\ir_actions.py", line 277, in _compute_search_view
  File "C:\Program Files\Odoo 10.0\server\odoo\api.py", line 752, in __getitem__
  File "C:\Program Files\Odoo 10.0\server\odoo\modules\registry.py", line 174, in __getitem__
KeyError: u'school.student'




please help me