Error Log

ValueError: Indices for islice() must be None or an integer: 0 <= x <= sys.maxsize.
request = <FixtureRequest for <Function 'test_user_of_client_detaching_sees_dataset_in_attached_view_mode_reattached_via_client_reattaching_detached_previously_via_client_detaching[1oz_1op_1oc-web GUI-REST]'>>

    @pytest.mark.usefixtures(*function_args)
    def scenario_wrapper(request):
>       _execute_scenario(feature, scenario, request, encoding)

/usr/local/lib/python3.6/dist-packages/pytest_bdd/scenario.py:227: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/usr/local/lib/python3.6/dist-packages/pytest_bdd/scenario.py:189: in _execute_scenario
    _execute_step_function(request, scenario, step, step_func)
/usr/local/lib/python3.6/dist-packages/pytest_bdd/scenario.py:130: in _execute_step_function
    step_func(**kwargs)
tests/utils/bdd_utils.py:78: in wrapper
    return fun(*ba.args, **ba.kwargs)
<decorator-gen-915>:2: in detach_dataset_in_op
    ???
tests/utils/utils.py:90: in wrapper
    return fun(*args, **kwargs)
tests/mixed/steps/dataset.py:226: in detach_dataset_in_op
    op_container, tmp_memory, item_name, modals)
tests/gui/meta_steps/oneprovider/dataset.py:240: in detach_dataset_in_op_gui
    option_in_data_row_menu, modals)
tests/utils/bdd_utils.py:78: in wrapper
    return fun(*ba.args, **ba.kwargs)
<decorator-gen-613>:2: in click_option_in_data_row_menu_in_browser
    ???
tests/utils/utils.py:90: in wrapper
    return fun(*args, **kwargs)
tests/gui/steps/oneprovider/browser.py:185: in click_option_in_data_row_menu_in_browser
    modals(selenium[browser_id]).data_row_menu.choose_option(option)
tests/gui/utils/common/modals/data_row_menu.py:24: in choose_option
    self.scroll_to_bottom()
tests/gui/utils/common/modals/data_row_menu.py:30: in scroll_to_bottom
    self.options[option_len-1].web_elem)
tests/gui/utils/core/web_objects.py:70: in __getitem__
    item = self._getitem_by_idx(sel)
tests/gui/utils/core/web_objects.py:58: in _getitem_by_idx
    return nth(self.items, idx) if idx < len(self) else None
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

seq = [], idx = -1

    def nth(seq, idx):
>       return next(islice(seq, idx, None), None)
E       ValueError: Indices for islice() must be None or an integer: 0 <= x <= sys.maxsize.

tests/gui/utils/generic.py:166: ValueError