Traceback (most recent call last):
  File "electrum\gui\qt\wizard\wizard.py", line 219, in on_next_button_clicked
  File "electrum\gui\qt\wizard\wizard.py", line 150, in load_next_component
  File "electrum\gui\qt\wizard\wallet.py", line 754, in on_ready
  File "electrum\gui\qt\wizard\wallet.py", line 741, in on_choice_click
TypeError: 'NoneType' object is not subscriptable