Stutter when sublime is opened

Unable to fetch update url contents
Package Control: Attempting to use Urllib downloader due to WinINet error: Error downloading channel. Operation timed out (errno 12002) during HTTP write phase of downloading https://packagecontrol.io/channel_v3.json.
Package Control: Error downloading channel. URL error [WinError 10060]  downloading https://packagecontrol.io/channel_v3.json.
Package Control: Error downloading channel. URL error [WinError 10060]  downloading https://packagecontrol.io/channel_v3.json.
Package Control: No updated packages

the above is the output of the console, is it related to update? How to set up? Thank you!

Mar.13,2021

is mainly an error caused by https://packagecontrol.io/cha., which is blocked and cannot be downloaded. Change the download link to domestic

.
-sharp Preferences > Package Settings > Package Control > Settings - User
-sharp 
"channels":
    [
        "http://cst.stu.126.net/u/json/cms/channel_v3.json",
        //"https://packagecontrol.io/channel_v3.json",
        //"https://web.archive.org/web/20160103232808/https://packagecontrol.io/channel_v3.json",
        //"https://gist.githubusercontent.com/nick1m/660ed046a096dae0b0ab/raw/e6e9e23a0bb48b44537f61025fbc359f8d586eb4/channel_v3.json"
    ],
Menu