Error Log

AttributeError: 'NoneType' object has no attribute 'elements_list'
request = <FixtureRequest for <Function 'test_user_successfully_adds_space_to_harvester_with_invitation_token[1oz_1op_elasticsearch]'>>

    @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:77: in wrapper
    return fun(*ba.args, **ba.kwargs)
<decorator-gen-665>:2: in click_on_option_of_harvester_on_left_sidebar_menu
    ???
tests/utils/utils.py:90: in wrapper
    return fun(*args, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

selenium = {'browser': <selenium.webdriver.chrome.webdriver.WebDriver (session="c381e93808310a7605e9bd79eaeca8af")>}
browser_id = 'browser', harvester_name = 'harvester4', option = 'Spaces'
oz_page = <class 'tests.gui.utils.onezone.OZLoggedIn'>

    @wt(parsers.re('user of (?P<browser_id>.*?) clicks (?P<option>.*?) '
                   'of "(?P<harvester_name>.*?)" harvester in the sidebar'))
    @repeat_failed(timeout=WAIT_FRONTEND)
    def click_on_option_of_harvester_on_left_sidebar_menu(selenium, browser_id,
                                                          harvester_name, option,
                                                          oz_page):
        driver = selenium[browser_id]
>       getattr(oz_page(driver)['discovery'].elements_list[harvester_name],
                transform(option)).click()
E       AttributeError: 'NoneType' object has no attribute 'elements_list'

tests/gui/steps/onezone/harvesters/discovery.py:88: AttributeError