由于网站使用了jsDelivr CDN载入部分JS与CSS文件，于12月20日下午出现SSL证书失效，需要等jsDelivr解决。
等待修复期间可能出现使用问题。
jsDelivr 状态查询 https://status.jsdelivr.com/
更新：
消息称：由于网宿忘记续费更新 SSL 证书（过期时间 2021-12-20 05:24:13 UTC ），且 cdn.jsdelivr.net 开启了 HSTS ，导致大部分国内使用改加速站点的资源无法加载
临时解决方法：
修改为
或者
https://cdn.jsdelivr.net/npm/ 修改 https://unpkg.com/
仅适用于NPM
或使用其他CDN或使用自己服务器。
最后忙猜是白嫖CDN+github 图床之类的操作放了敏感信息。导致网宿停止了服务。
更新：
域名备案已经被取消了
您的连接不是私密连接
攻击者可能会试图从 cdn.jsdelivr.net 窃取您的信息（例如：密码、通讯内容或信用卡信息）。了解详情
NET::ERR_CERT_COMMON_NAME_INVALID
Subject: default.chinanetcenter.com
Issuer: DigiCert Basic RSA CN CA G2
Expires on: 2022年11月15日
Current date: 2021年12月20日
PEM encoded chain:
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