JSONDecodeError处于/预期值：第1行第1列（字符0）

Question

我遇到了无法调试的错误

from .services import GetList,GetAPIkey,GetAPIurl

class ApiListView(TemplateView):
    def get(self, request):
        list_view = GetList().get_list_data()
        movie_list = list_view.json()
        if self.request.session.has_key('email'):
            email = self.request.session['email']
            context = {
                'movie_list':movie_list,
                'email':email
            }
        else:
            context = {'movie_list': movie_list}
        return render(request, 'home-index.html', context)

回溯错误显示错误，错误显示此处movie_list = list_view.json()

import requests


class GetList():
    def get_list_data(self):
        API_KEY = '***********8'
        API_URL = 'http://devstudio.cnedocent.com/rest/getContentList'
        parameters = {'authToken': API_KEY,'permalink': 'movie'}
        r = requests.get(url=API_URL, params=parameters)
        return r