Traceback (most recent call last):
  File "/usr/lib/python3.11/site-packages/electrum/gui/qt/wizard/wizard.py", line 216, in on_next_button_clicked
    next = self.submit(wd)
           ^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/electrum/gui/qt/wizard/wizard.py", line 228, in submit
    view = self.resolve_next(self._current.view, wdata)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/electrum/wizard.py", line 96, in resolve_next
    elif len(nv) == 1:
         ^^^^^^^
TypeError: object of type 'NoneType' has no len()