TemplateResponseMixin requires either a definition of 'template_name' or an implementation of 'get_template_names()'

[geweb7]

ImproperlyConfigured at /kassa/order-check/

TemplateResponseMixin requires either a definition of 'template_name' or an implementation of 'get_template_names()'

Error is raised in this code:

/python2.7/site-packages/yandex_kassa/views.py in dispatch
@method_decorator(csrf_exempt)
def dispatch(self, _args, *_kwargs):
post_data = json.dumps(self.request.POST,
encoding='utf8', ensure_ascii=False)
msg = u'URL="%s" POST="%s"' % (self.request.path, post_data)
logger.debug(msg)
return super(BaseFormView, self).dispatch(_args, *_kwargs)

Django 1.7.9