Error Log

AttributeError: 'NoneType' object has no attribute 'elements_list'
request = <FixtureRequest for <Function 'test_user_successfully_renames_harvester_with_modify_harvester_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-1031>:2: in send_invitation_token
    ???
tests/utils/utils.py:90: in wrapper
    return fun(*args, **kwargs)
tests/gui/meta_steps/onezone/harvesters.py:202: in send_invitation_token
    oz_page)
tests/utils/bdd_utils.py:77: in wrapper
    return fun(*ba.args, **ba.kwargs)
<decorator-gen-545>:2: in click_element_on_lists_on_left_sidebar_menu
    ???
tests/utils/utils.py:90: in wrapper
    return fun(*args, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

selenium = {'browser1': <selenium.webdriver.chrome.webdriver.WebDriver (session="28ebba14452425f27ad7f65cfe70a370")>, 'browser2': <selenium.webdriver.chrome.webdriver.WebDriver (session="fd9ce58e070f1b2b1f07041fe6d4f726")>}
browser_id = 'browser1', option = 'discovery', name = 'harvester12'
oz_page = <class 'tests.gui.utils.onezone.OZLoggedIn'>

    @wt(parsers.re('user of (?P<browser_id>.*?) clicks "(?P<name>.*?)" '
                   'on the (?P<option>spaces|groups|harvesters) list in the sidebar'))
    @repeat_failed(timeout=WAIT_FRONTEND)
    def click_element_on_lists_on_left_sidebar_menu(selenium, browser_id, option,
                                                    name, oz_page):
        driver = selenium[browser_id]
        if option == 'harvesters':
            option = 'discovery'
    
        if option == 'spaces':
            option = 'data'
            oz_page(driver)[option].spaces_header_list[name]()
        else:
>           oz_page(driver)[option].elements_list[name].click()
E           AttributeError: 'NoneType' object has no attribute 'elements_list'

tests/gui/steps/onezone/spaces.py:117: AttributeError