In the Google Chrome browser, after Toutiao is opened, a blank analysis is solved

查看 Console,报错:Access to XMLHttpRequest at 'https://verify.snssdk.com/reportError' from origin 'https://www.toutiao.com' has been blocked by CORS policy: Request header field ra-ver is not allowed by Access-Control-Allow-Headers in preflight response.
1. In the Google Chrome browser, after today’s Toutiao is opened, it is blank, as shown in Figure 1
在 Google Chrome 浏览器中,今日头条打开后,一片空白
Figure 1


Request URL: https://verify.snssdk.com/reportError
Referrer Policy: no-referrer-when-downgrade


2. Check the console, report an error: access to xmlHttpRequest athttps://verify.snssdk.com/reportErrorfrom originhttps://www.toutiao.comHas been blocked by cors policy: request header field ra-ver is not allowed by access-control-allow-headers in preflight Response. As shown in Figure 2
查看 Console,报错:Access to XMLHttpRequest at 'https://verify.snssdk.com/reportError' from origin 'https://www.toutiao.com' has been blocked by CORS policy: Request header field ra-ver is not allowed by Access-Control-Allow-Headers in preflight response.
Figure 2
3. Clear browsing data, including basic and advanced, still blank, as shown in Figure 3
清除浏览数据,包含基本与高级,仍然一片空白
Figure 3
4. Open a new Wuhen window, after opening Toutiao, it is normal, check the console, no error is reported, as shown in Figure 4
打开新的无痕窗口,今日头条打开后,正常,查看 Console,未报错
Figure 4


version:0.1.7
pc_text.js:1 version:0.1.7
(index):1 A cookie associated with a cross-site resource at http://i.snssdk.com/ was set without the `SameSite` attribute. A future release of Chrome will only deliver cookies with cross-site requests if they are set with `SameSite=None` and `Secure`. You can review cookies in developer tools under Application>Storage>Cookies and see more details at https://www.chromestatus.com/feature/5088147346030592 and https://www.chromestatus.com/feature/5633521622188032.
vendor.e2caf4792c6de5bf3950.js:112 [tea-sdk][default]已禁止默认上报predefine_pageview事件,需手动上报。
VM15:1 
raven.js:1 [tea-sdk][default]看到本提示,意味着用户信息已完全就绪,上报通道打开。用户标识如下:
raven.js:1 [tea-sdk][default] {
  "user_unique_id": "6799972943449261575",
  "web_id": "6799972943449261575",
  "ssid": "e58f1dbf-0ff2-4702-94b4-6cc59d325369"
}
raven.js:1 [tea-sdk] SDK已经初始化过了!请检查是否多次引入了SDK文件
e.<computed> @ raven.js:1
2p3.pstatp.com/list/240x240/6799949924902619915:1 Failed to load resource: the server responded with a status of 400 (Bad Request)
(index):1 A cookie associated with a cross-site resource at https://xxbg.snssdk.com/ was set without the `SameSite` attribute. A future release of Chrome will only deliver cookies with cross-site requests if they are set with `SameSite=None` and `Secure`. You can review cookies in developer tools under Application>Storage>Cookies and see more details at https://www.chromestatus.com/feature/5088147346030592 and https://www.chromestatus.com/feature/5633521622188032.
p3.pstatp.com/list/240x240/6799949924902619915:1 Failed to load resource: the server responded with a status of 400 (Bad Request)


5. Comparison request: https://verify.snssdk.com/reportError Response, one is no response, the other is a response. as shown in Figure 5
对比请求:https://verify.snssdk.com/reportError 的响应,一为无响应,一为有响应。
Figure 5


{"code":"200","data":null,"msg":""}


6. In the seamless mode, the links such as downloading apps and registered headline numbers have been newly added. I vaguely remember that there was no previous one. Then the reason for the blank after opening this time may be that Toutiao has upgraded the new version, which is not compatible. as shown in Figure 6
发现无痕模式下,新增加了下载APP、注册头条号等链接,隐约记得之前是没有的。那么这次打开后一片空白的原因,可能在于今日头条升级了新版本,不兼容导致的。
Figure 6
7. Finally, in the 360 Software Manager, uninstall the Google Chrome browser, as shown in Figure 7
最后在360软件管家中,卸载了 Google Chrome 浏览器
Figure 7
8. When uninstalling, check and delete your browsing data at the same time? as shown in Figure 8
卸载时,勾选同时删除你的浏览数据吗?
8
9. Reinstall the google chrome browser and open Toutiao again, normal, as shown in Figure 9
重新安装 Google Chrome 浏览器,再次打开今日头条,正常
Figure 9

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