Installed Debian Sid XFCE - No Menu Prefix Found

After the .deb file was installed, I clicked on the new Applications -> Accessories -> Menu Edit icon but nothing popped up. I read the man page, discovered the documentation wki is not yet established, and tried menulibre -v from a terminal emulation session:

DEBUG:menulibre: set_up_logging() 'logging enabled'
WARNING:menulibre: getDefaultMenuPrefix() 'No menu prefix found, MenuLibre will not function properly.'
DEBUG:menulibre: __init__() 'Using menu: /home/dlc/.config/menus/applications.menu'
DEBUG:menulibre: block() 'Blocking history updates'
DEBUG:menulibre: unblock() 'Unblocking history updates'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/menulibre/MenulibreApplication.py", line 2247, in do_activate
    self.win = MenulibreWindow(self)
  File "/usr/lib/python3/dist-packages/menulibre/MenulibreApplication.py", line 338, in __init__
    self.configure_application_treeview(builder)
  File "/usr/lib/python3/dist-packages/menulibre/MenulibreApplication.py", line 614, in configure_application_treeview
    selection.set_select_function(self.on_treeview_selection)
TypeError: set_select_function() takes exactly 3 arguments (2 given)

and execution has to put in background then sent a SIGHUP to terminate.

Should I open a Debian bug or can someone point me to a manual?