Odoo Server ErrorTraceback (most recent call last):

  File "/usr/lib/python2.7/dist-packages/odoo/http.py", line 638, in _handle_exception return super(JsonRequest, self)._handle_exception(exception) File "/usr/lib/python2.7/dist-packages/odoo/http.py", line 675, in dispatch result = self._call_function(**self.params) File "/usr/lib/python2.7/dist-packages/odoo/http.py", line 331, in _call_function return checked_call(self.db, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/odoo/service/model.py", line 119, in wrapper return f(dbname, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/odoo/http.py", line 324, in checked_call result = self.endpoint(*a, **kw) File "/usr/lib/python2.7/dist-packages/odoo/http.py", line 933, in __call__ return self.method(*args, **kw) File "/usr/lib/python2.7/dist-packages/odoo/http.py", line 504, in response_wrap response = f(*args, **kw) File "/usr/lib/python2.7/dist-packages/odoo/addons/web/controllers/main.py", line 862, in call_kw return self._call_kw(model, method, args, kwargs) File "/usr/lib/python2.7/dist-packages/odoo/addons/web/controllers/main.py", line 854, in _call_kw return call_kw(request.env[model], method, args, kwargs) File "/usr/lib/python2.7/dist-packages/odoo/api.py", line 681, in call_kw return call_kw_multi(method, model, args, kwargs) File "/usr/lib/python2.7/dist-packages/odoo/api.py", line 672, in call_kw_multi result = method(recs, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/odoo/models.py", line 3390, in unlink cr.execute(query, (sub_ids,)) File "/usr/lib/python2.7/dist-packages/odoo/sql_db.py", line 141, in wrapper return f(self, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/odoo/sql_db.py", line 218, in execute res = self._obj.execute(query, params)OperationalError: cannot delete from view "report_stock_lines_date"DETAIL: Views containing GROUP BY are not automatically updatable.

HINT: To enable deleting from the view, provide an INSTEAD OF DELETE trigger or an unconditional ON DELETE DO INSTEAD rule.