Traceback (most recent call last):


 "SelectField_error.py", line 9, in <module>

form.validate()


 "[...]/python3.7/site-packages/wtforms/form.py", line 300, in validate

return super(Form, self).validate(extra)


 "[...]/python3.7/site-packages/wtforms/form.py", line 136, in validate

if not field.validate(self, extra):


 "[...]/python3.7/site-packages/wtforms/fields/core.py", line 244, in validate

self.pre_validate(form)


 "[..]./python3.7/site-packages/wtforms/fields/core.py", line 549, in pre_validate

for v, _ in self.choices:
TypeError: 'NoneType' object is not iterable

Traceback (most recent call last):


 "/home/legluondunet/Téléchargements/lutris/lutris/gui/views/base.py", line 34, in popup_contextual_menu

selected_id = self.get_selected_id(self.get_model().get_iter(view.current_path))


 "/usr/lib/python3.8/site-packages/gi/overrides/Gtk.py", line 873, in get_iter

path = self._coerce_path(path)


 "/usr/lib/python3.8/site-packages/gi/overrides/Gtk.py", line 848, in _coerce_path

return TreePath(path)


 "/usr/lib/python3.8/site-packages/gi/overrides/Gtk.py", line 1220, in __new__

raise TypeError("could not parse subscript '%s' as a tree path" % path)
TypeError: could not parse subscript '0:<Gtk.TreeViewColumn object at 0x7f9b38108d80 (GtkTreeViewColumn at 0x555e5290c8f0)>:186:24' as a tree path
