File "/data/user/0/org.electrum.electrum/files/app/_python_bundle/site-packages/kivy/core/window/window_sdl2.py", line 727, in mainloop
    self._mainloop()
  File "/data/user/0/org.electrum.electrum/files/app/_python_bundle/site-packages/kivy/core/window/window_sdl2.py", line 460, in _mainloop
    EventLoop.idle()
  File "/data/user/0/org.electrum.electrum/files/app/_python_bundle/site-packages/kivy/base.py", line 337, in idle
    Clock.tick()
  File "/data/user/0/org.electrum.electrum/files/app/_python_bundle/site-packages/kivy/clock.py", line 581, in tick
    self._process_events()
  File "kivy/_clock.pyx", line 384, in kivy._clock.CyClockBase._process_events
  File "kivy/_clock.pyx", line 414, in kivy._clock.CyClockBase._process_events
  File "kivy/_clock.pyx", line 412, in kivy._clock.CyClockBase._process_events
  File "kivy/_clock.pyx", line 167, in kivy._clock.ClockEvent.tick
  File "./electrum/gui/kivy/uix/dialogs/password_dialog.py", line 106, in <lambda>
    Clock.schedule_once(lambda dt: self.on_success(*args), 0.1)
  File "./electrum/gui/kivy/main_window.py", line 1011, in <lambda>
    on_success = lambda pw: f(*(args + (pw,)))
  File "./electrum/gui/kivy/main_window.py", line 1089, in show_private_key
    key = str(self.wallet.export_private_key(addr, password)[0])
  File "./electrum/wallet.py", line 316, in export_private_key
    index = self.get_address_index(address)
  File "./electrum/wallet.py", line 1407, in get_address_index
    return self.get_public_key(address)
  File "./electrum/wallet.py", line 1410, in get_public_key
    return self.addresses[address].get('pubkey')