Menulibre does not start

After update from budgie 18.10 to 19.04 menulibre does not start.
In tillix I get the following message:

menulibre:21182): Gtk-WARNING **: 14:38:11.273: Theme parsing error: gtk.css:2718:25: ‘gtkopacity’ is not a valid color name

(menulibre:21182): Gtk-WARNING **: 14:38:11.273: Theme parsing error: gtk.css:2728:15: Junk at end of value for padding

(menulibre:21182): Gtk-WARNING **: 14:38:11.273: Theme parsing error: gtk.css:2787:13: Junk at end of value for padding

(menulibre:21182): Gtk-WARNING **: 14:38:11.431: gtk_menu_attach_to_widget(): menu already attached to GtkMenuButton

(menulibre:21182): Gtk-WARNING **: 14:38:11.530: gtk_menu_attach_to_widget(): menu already attached to GtkMenuButton
Traceback (most recent call last):
File “/usr/lib/python3/dist-packages/menulibre/MenulibreApplication.py”, line 2217, in do_activate
self.win = MenulibreWindow(self, headerbar)
File “/usr/lib/python3/dist-packages/menulibre/MenulibreApplication.py”, line 250, in init
self.configure_application_treeview(builder)
File “/usr/lib/python3/dist-packages/menulibre/MenulibreApplication.py”, line 589, in configure_application_treeview
self.treeview = MenulibreTreeview.Treeview(self, builder)
File “/usr/lib/python3/dist-packages/menulibre/MenulibreTreeview.py”, line 48, in init
self._configure_treeview(builder)
File “/usr/lib/python3/dist-packages/menulibre/MenulibreTreeview.py”, line 59, in _configure_treeview
treestore = MenuEditor.get_treestore()
File “/usr/lib/python3/dist-packages/menulibre/MenuEditor.py”, line 123, in get_treestore
return menu_to_treestore(treestore, None, menu)
File “/usr/lib/python3/dist-packages/menulibre/MenuEditor.py”, line 100, in menu_to_treestore
tooltip = escapeText(item[2][‘comment’])
File “/usr/lib/python3/dist-packages/menulibre/util.py”, line 99, in escapeText
return GLib.markup_escape_text(text, len(text))
File “/usr/lib/python3/dist-packages/gi/overrides/GLib.py”, line 415, in markup_escape_text
return GLib.markup_escape_text(text, length)
UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xc3 in position 14: unexpected end of data

This is a known issue:

https://bugs.launchpad.net/ubuntu/+source/menulibre/+bug/1825511

Please hit the “Does this bug affect me” link to keep up-to-date with the latest.

Thank you fossfreedom,
the solution of Bugzilla has worked for me:

Edit the file menulibre util.py:
sudo nano /usr/lib/python3/dist-packages/menulibre/util.py
Search for:
return GLib.markup_escape_text(text, len(text))
Replace with:
return GLib.markup_escape_text(text)