https://gitlab.com/mailman/hyperkitty/-/blob/master/hyperkitty/views/mlist.py?ref_type=heads#L173 says ``` LastView.objects.delete(pk=del_id) ``` but `LastView.objects` has no `delete` method. This should be ``` LastView.objects.get(pk=del_id).delete() ``` See thread at https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/thread/H44V35WZTKCXVHJK2R5R5UJAB5PQO3FC/