haystack sqs与django分页无法正常工作

Question

以下是观点：

def search(request, template_name='search/search.html'):
    filters = {}
    status = None
    query = request.GET.get('q')
    form = FilterForm(request.GET or None)
    sqs = SearchQuerySet().models(Tutor).order_by('-overall_rating')
    paginator = Paginator(sqs, 10)
    page = request.GET.get('page')

    try:
        results = paginator.page(page)
    except PageNotAnInteger:
        results = paginator.page(1)
    except EmptyPage:
        results = paginator.page(paginator.num_pages)

    context = {
        'results': results,
        'form':    form,
    }

    return render(request, template_name, context)

现在ipdb中的sq显示为：

[<SearchResult: tutoring.tutor (pk=u'2')>, <SearchResult: tutoring.tutor (pk=u'1')>]

其数量为2.但分页结果显示为：

paginator = Paginator(sqs, 10)
results = paginator.page(1)
results.object_list
[<SearchResult: tutoring.tutor (pk=u'2')>, None]

其中第二个结果实例更改为“无”。我在django 1.4.1和最新的干草堆来自github。可能是什么问题？