Error just after installation on clean system

[Ilya-Kuchaev]

Error: Odoo Server Error

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 650, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 310, 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 692, in dispatch
    result = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 342, 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 335, in checked_call
    result = self.endpoint(*a, **kw)
  File "/mnt/extra-addons/web/web_syncer/http.py", line 9, in __call__
    result = self.method(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 515, in response_wrap
    response = f(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 934, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 926, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 687, in call_kw
    return call_kw_model(method, model, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 672, in call_kw_model
    result = method(recs, *args, **kwargs)
  File "/mnt/extra-addons/OpenHRMS/hrms_dashboard/models/hrms_dashboard.py", line 142, in get_department_leave
    rf = df.groupby(['month', 'department']).sum()
  File "/var/lib/odoo/.local/lib/python3.5/site-packages/pandas/core/generic.py", line 6665, in groupby
    observed=observed, **kwargs)
  File "/var/lib/odoo/.local/lib/python3.5/site-packages/pandas/core/groupby/groupby.py", line 2152, in groupby
    return klass(obj, by, **kwds)
  File "/var/lib/odoo/.local/lib/python3.5/site-packages/pandas/core/groupby/groupby.py", line 599, in __init__
    mutated=self.mutated)
  File "/var/lib/odoo/.local/lib/python3.5/site-packages/pandas/core/groupby/groupby.py", line 3291, in _get_grouper
    raise KeyError(gpr)
KeyError: 'month'

[CybroOdoo]

@Ilya-Kuchaev We have updated the Issue with the Dashboard. Please download the new code and check.

Thanks