Build: #53 failed

Job: Onezone basic failed

group leaves parent group: Test case result

The below summarizes the result of the test " group leaves parent group" in build 53 of Onedata Products - gui acceptance pkg - feature-VFS-4716-introduction-to-acceptance-testing - Chrome onezone basic tests.
Description
group leaves parent group
Test class
gui.scenarios.test_onezone_basic
Method
test_group_leaves_parent_group
Duration
31 secs
Status
Failed (Existing Failure)

Error Log

AttributeError: 'NoneType' object has no attribute 'elements_list'
request = <FixtureRequest for <Function 'test_group_leaves_parent_group'>>

>   ???

tests/gui/scenarios/test_onezone_basic.py:41: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/usr/local/lib/python2.7/dist-packages/pytest_bdd/scenario.py:195: in _execute_scenario
    _execute_step_function(request, scenario, step, step_func)
/usr/local/lib/python2.7/dist-packages/pytest_bdd/scenario.py:137: in _execute_step_function
    step_func(**kwargs)
<decorator-gen-310>:2: in leave_parent_group
    ???
tests/gui/utils/generic.py:110: in wrapper
    return fun(*args, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

selenium = {'browser1': <selenium.webdriver.chrome.webdriver.WebDriver (session="444c01f3dee157ec199401642324929a")>, 'browser2': <selenium.webdriver.chrome.webdriver.WebDriver (session="71348394c7cbd9be07aaa943b711a032")>}
browser_id = 'browser2', parent = 'group1', child = 'group2'
oz_page = <class 'tests.gui.utils.onezone.OZLoggedIn'>

    @wt(parsers.parse('user of {browser_id} removes group "{parent}" from '
                      'group "{child}" parents list'))
    @repeat_failed(timeout=WAIT_FRONTEND)
    def leave_parent_group(selenium, browser_id, parent, child, oz_page):
        page = oz_page(selenium[browser_id])['groups']
>       page.elements_list[child]()
E       AttributeError: 'NoneType' object has no attribute 'elements_list'

tests/gui/steps/onezone/groups.py:296: AttributeError