Acceptance tests using different clients concurrently. Environment deployed from packages.

Build: #814 failed

Job: Groups basic was successful

user joins group[1oz 1op 1oc-RESt-web GUi]: Test case result

The below summarizes the result of the test " user joins group[1oz 1op 1oc-RESt-web GUi]" in build 814 of Onedata Products - mixed acceptance pkg - Chrome groups basic tests.
Description
user joins group[1oz 1op 1oc-RESt-web GUi]
Test class
mixed.scenarios.test_groups_basic
Method
test_user_joins_group[1oz_1op_1oc-REST-web GUI]
Duration
1 min
Status
Failed (Existing Failure)

Error Log

AttributeError: 'NoneType' object has no attribute 'elements_list'
request = <FixtureRequest for <Function 'test_user_joins_group[1oz_1op_1oc-REST-web GUI]'>>

    @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:76: in wrapper
    return fun(*ba.args, **ba.kwargs)
tests/utils/bdd_utils.py:76: in wrapper
    return fun(*ba.args, **ba.kwargs)
tests/mixed/steps/group_basic.py:205: in invite_to_group
    onepanel, popups)
tests/gui/meta_steps/onezone/groups.py:179: in create_group_token_to_invite_user_using_op_gui
    displays, clipboard, member, onepanel, popups)
<decorator-gen-590>:2: in _create_group_token
    ???
tests/utils/utils.py:80: in wrapper
    return fun(*args, **kwargs)
tests/gui/meta_steps/onezone/groups.py:162: in _create_group_token
    go_to_group_subpage(selenium, user, name, subpage, oz_page)
tests/utils/bdd_utils.py:76: in wrapper
    return fun(*ba.args, **ba.kwargs)
<decorator-gen-482>:2: in go_to_group_subpage
    ???
tests/utils/utils.py:80: in wrapper
    return fun(*args, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

selenium = {'browser': <selenium.webdriver.chrome.webdriver.WebDriver (session="ac4e73b3bbcfcb3f7acea13f14da1f26")>, 'user1': <se...a13f14da1f26")>, 'user2': <selenium.webdriver.chrome.webdriver.WebDriver (session="3eef6d98e24afa6d50adb0af61abc7c6")>}
browser_id = 'user1', group = 'group1', subpage = 'members'
oz_page = <class 'tests.gui.utils.onezone.OZLoggedIn'>

    @wt(parsers.re('user of (?P<browser_id>.*) goes to group "(?P<group>.*)" '
                   '(?P<subpage>members|hierarchy|main) subpage'))
    @repeat_failed(timeout=WAIT_FRONTEND)
    def go_to_group_subpage(selenium, browser_id, group, subpage, oz_page):
        page = oz_page(selenium[browser_id])['groups']
>       page.elements_list[group]()
E       AttributeError: 'NoneType' object has no attribute 'elements_list'

tests/gui/steps/onezone/groups.py:135: AttributeError