How to fix scrolling error in django-el-pagination app?

Question

Django

Hello, help me solve the problem.
I'm using infinite scroll in django-el-pagination app .
When the user reaches the last page in the terminal, an error appears:

Time: [25/Jan/2018 08:37:38] | LevelName: DEBUG | Module: base | Process: 1148 | Thread: 123145435922432 | Message: Exception while resolving variable 'querystring' in template 'documents/documents.html'.
Traceback (most recent call last):
  File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/template/base.py", line 903, in _resolve_lookup
    (bit, current))  # missing attribute
VariableDoesNotExist: Failed lookup for key [querystring] in u"[{'False': False, 'None': None, 'True': True}, {'csrf_token': <SimpleLazyObject: <function _get_val at 0x109034ed8>>}]

views.py:

from el_pagination.views import AjaxListView

class DocumentListView(AjaxListView):
    context_object_name = 'documents'
    template_name = "documents/main.html"
    page_template = 'documents/documents.html'

    def get_queryset(self):
        documents = Document.objects.all()
        return documents

documents/main.html:

<div class="list-group">
    {% include page_template %}
</div>

documents/documents.html:

{% load el_pagination_tags %}

{% paginate 20 documents %}
{% for document in documents %}
    {% include "documents/list_template.html" %}
{% endfor %}
{% show_more %}

documents/list_template.html:

<div class="list-group-item">{{document.title}}</div>

It seems to be an error due to the querystring that is used in the show_more tag template . Do you have any ideas how to fix this error?