File "/data/user/0/org.electrum.electrum/files/app/crystax_python/site-packages/kivy/core/window/window_sdl2.py", line 727, in mainloop
    self._mainloop()
  File "/data/user/0/org.electrum.electrum/files/app/crystax_python/site-packages/kivy/core/window/window_sdl2.py", line 666, in _mainloop
    self.modifiers)
  File "kivy/_event.pyx", line 703, in kivy._event.EventDispatcher.dispatch
  File "kivy/_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
  File "kivy/_event.pyx", line 1138, in kivy._event.EventObservers._dispatch
  File "./gui/kivy/main_window.py", line 567, in on_keyboard
    self.show_info(_('Press again to exit'))
  File "./gui/kivy/main_window.py", line 786, in show_info
    arrow_pos=arrow_pos)
  File "./gui/kivy/main_window.py", line 778, in show_error
    duration=duration, modal=modal)
  File "./gui/kivy/main_window.py", line 836, in show_info_bubble
    info_bubble.show(pos, duration, width, modal=modal, exit=exit)
  File "./gui/kivy/uix/dialogs/__init__.py", line 146, in show
    Window.add_widget(self)
  File "/data/user/0/org.electrum.electrum/files/app/crystax_python/site-packages/kivy/core/window/__init__.py", line 1255, in add_widget
    (widget, widget.parent)