python爬虫使用json()方法将response结果转化为JSON格式时报错

Question

问题遇到的现象和发生背景

python爬虫使用json()方法将response结果转化为JSON格式时报错simplejson.errors.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

问题相关代码，请勿粘贴截图

 try:
        response = requests.get(url)
        if response.status_code == 200:
            print('连接成功')
            print(type(response))
            return response.json()
        else:
            print(response.status_code)

运行结果及报错内容

import requests
from urllib.parse import urlencode


def get_page(page_num):
    params = {
        "keyword": "街拍",
        "pd": "atlas",
        "source": "search_subtab_switch",
        "dvpf": "pc",
        "aid": "4916",
        "page_num": page_num,
        "rawJSON": "1",
        "search_id": "202202111136570101501341604D100200"
        }
    url = 'https://so.toutiao.com/search?' + urlencode(params)
    print(url)
    try:
        response = requests.get(url)
        if response.status_code == 200:
            print('连接成功')
            print(type(response))
            return response.json()
        else:
            print(response.status_code)
    except requests.ConnectionError:
        print('连接失败')
        return None

我的解答思路和尝试过的方法

1、原网页是不是json格式内容。 是
2、测试是否被反爬 没有被反爬
3、

我想要达到的结果

能将response转换为JSON格式