Error Log

AttributeError: 'NoneType' object has no attribute 'elements_list'
request = <FixtureRequest for <Function 'test_user_successfully_removes_group_from_harvester_with_remove_group_privilege[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-1041>:2: in add_group_to_harvester
    ???
tests/utils/utils.py:90: in wrapper
    return fun(*args, **kwargs)
tests/gui/meta_steps/onezone/harvesters.py:157: in add_group_to_harvester
    oz_page)
tests/utils/bdd_utils.py:77: in wrapper
    return fun(*ba.args, **ba.kwargs)
<decorator-gen-687>:2: in click_on_option_of_harvester_on_left_sidebar_menu
    ???
tests/utils/utils.py:90: in wrapper
    return fun(*args, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

selenium = {'browser1': <selenium.webdriver.chrome.webdriver.WebDriver (session="ff19723861f6eb66d4cb614fab312e7d")>, 'browser2': <selenium.webdriver.chrome.webdriver.WebDriver (session="4fc6d79a596485cbd9324a741a65f602")>}
browser_id = 'browser1', harvester_name = 'harvester19', option = 'Members'
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