#2931 (get_change_observers() takes 1 positional argument but 2 were given)
by Luc Saffre · in Developers · assigned to tonis
Résumé
inv prep fails in welfare saying TypeError: Problem installing fixture '.../welfare/lino_welfare/modlib/cal/fixtures/std.py': get_change_observers() takes 1 positional argument but 2 were given