Traceback (most recent call last):
  File "/home/user/wspace/electrum/electrum/gui/qt/util.py", line 1057, in on_done
    cb_result(result)
  File "/home/user/wspace/electrum/electrum/plugins/trezor/qt.py", line 530, in update
    passphrases_label.setText(disen[features.passphrase_protection])
TypeError: list indices must be integers or slices, not NoneType