Description of problem:

I started timeline, and click create event menu.

/usr/bin/timeline 
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/setup.py", line 48, in unhandled_exception_hook
    show_feedback_dialog(
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/dialogs/feedback/view.py", line 92, in show_feedback_dialog
    dialog = FeedbackDialog(parent, info, subject, body)
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/dialogs/feedback/view.py", line 52, in __init__
    Dialog.__init__(self, FeedbackDialogController, parent, {
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 205, in __init__
    component = self._create(controller_class, variables)
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 41, in _create
    return self._create_from_node(self, xml.etree.ElementTree.fromstring(self.__doc__))
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 51, in _create_from_node
    component = creator(parent, node)
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 58, in _create_BoxSizerVertical
    return self._populate_sizer(parent, node, wx.BoxSizer(wx.VERTICAL))
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 94, in _populate_sizer
    for child_node in node.getchildren():
AttributeError: 'xml.etree.ElementTree.Element' object has no attribute 'getchildren'

Original exception was:
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/frames/mainframe/menus/timelinemenu.py", line 38, in <lambda>
    mid.ID_CREATE_EVENT: lambda evt: open_create_event_editor(parent, parent, parent.config, parent.timeline),
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/dialogs/editevent/view.py", line 376, in open_create_event_editor
    safe_locking(edit_controller, edit_function)
  File "/usr/lib/python3.9/site-packages/timelinelib/db/utils.py", line 90, in safe_locking
    edit_function()
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/dialogs/editevent/view.py", line 373, in edit_function
    dialog = create_event_editor()
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/dialogs/editevent/view.py", line 370, in create_event_editor
    return EditEventDialog(parent, config, label, db, start, end)
  File "/usr/lib/python3.9/site-packages/timelinelib/wxgui/dialogs/editevent/view.py", line 175, in __init__
    Dialog.__init__(self, EditEventDialogController, parent, {
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 205, in __init__
    component = self._create(controller_class, variables)
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 41, in _create
    return self._create_from_node(self, xml.etree.ElementTree.fromstring(self.__doc__))
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 51, in _create_from_node
    component = creator(parent, node)
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 58, in _create_BoxSizerVertical
    return self._populate_sizer(parent, node, wx.BoxSizer(wx.VERTICAL))
  File "/usr/lib/python3.9/site-packages/humblewx/__init__.py", line 94, in _populate_sizer
    for child_node in node.getchildren():
AttributeError: 'xml.etree.ElementTree.Element' object has no attribute 'getchildren'

^C



Version-Release number of selected component (if applicable):

timeline-2.2.0-3.fc33.noarch


How reproducible:

I started timeline, and click create event menu.