AttributeError: 'NoneType' object has no attribute 'address'

[AndreMiras]

https://sentry.io/andre-5t/pywallet/issues/409997674/

AttributeError: 'NoneType' object has no attribute 'address'
(8 additional frame(s) were not displayed)
...
  File "kivy/_clock.pyx", line 397, in kivy._clock.CyClockBase._process_events (kivy/_clock.c:7577)
  File "kivy/_clock.pyx", line 395, in kivy._clock.CyClockBase._process_events (kivy/_clock.c:7498)
  File "kivy/_clock.pyx", line 167, in kivy._clock.ClockEvent.tick (kivy/_clock.c:3483)
  File "home/andre/Progz/PyWallet/.buildozer/android/platform/build/dists/pywallet/private/lib/python2.7/site-packages/kivy/clock.py", line 801, in callback_func
  File "home/andre/Progz/PyWallet/.buildozer/android/app/main.py", line 1400, in update_toolbar_title_balance

AttributeError: 'NoneType' object has no attribute 'address'

[AndreMiras]

To reproduce, start the app with no keytore. And go back to the home screen.
The bind_current_account_balance() call will then perform a update_toolbar_title_balance() call fails on no account.