Error I'm getting:
render() takes from 3 to 4 positional arguments but 5 were given

Throwing line:
class DjangoAdminMultiselect(forms.SelectMultiple):

    def render(self, name, value, attrs=None, choices=()):
        output = super(DjangoAdminMultiselect, self).render(name, value, attrs, choices)


Super class sig:
    def render(self, name, value, attrs=None, choices=()):