batch url Error: max() arg is an empty sequence

[Quincy515]

urlpatterns = [
        url(r'^gql', csrf_exempt(GraphQLView.as_view(batch=True))),
    ]

This issue has been reported earlier, with a fix, but it is not in master: #105

so how can I change my code? can fix this problem, thank you

[mbrochh]

Can you elaborate what is the issue here? I'm not getting this error in my projects.