今天尝试在旧联想笔记本上安装国产OS系统 openKylin，整体运行体验还不错，给爸妈做日常上网炒股机是足够了。
本想安装下Seafile和seadrive的客户端，按照官网教程添加软件源和密钥，结果出现错误。想问问有什么解决办法吗？
enovoxiaoxinair13iwl:/opt$ sudo wget https://linux-clients.seafile.com/seafile.asc -O /usr/share/keyrings/seafile-keyring.asc
--2023-10-03 10:48:38-- https://linux-clients.seafile.com/seafile.asc
正在解析主机 linux-clients.seafile.com (linux-clients.seafile.com)... 3.86.184.216
正在连接 linux-clients.seafile.com (linux-clients.seafile.com)|3.86.184.216|:443... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：2460 (2.4K) [application/octet-stream]
正在保存至: “/usr/share/keyrings/seafile-keyring.asc”
/usr/share/keyrings 100%[==================>] 2.40K --.-KB/s 用时 0s
2023-10-03 10:48:39 (315 MB/s) - 已保存 “/usr/share/keyrings/seafile-keyring.asc” [2460/2460])
enovoxiaoxinair13iwl:/opt$ echo "deb [arch=amd64 signed-by=/usr/share/keyrings/seafile-keyring.asc] https://linux-clients.seafile.com/seafile-deb/$(lsb_release -cs)/ stable main" | sudo tee /etc/apt/sources.list.d/seafile.list > /dev/null
enovoxiaoxinair13iwl:/opt$ sudo apt update
命中:1 http://archive.build.openkylin.top/openkylin yangtze InRelease
命中:2 http://archive.build.openkylin.top/openkylin yangtze-security InRelease
命中:3 http://ppa.build.openkylin.top/kylinsoft/anything/openkylin yangtze InRelease
命中:4 http://archive.build.openkylin.top/openkylin yangtze-updates InRelease
命中:5 http://software.openkylin.top/openkylin/yangtze default InRelease
忽略:6 https://linux-clients.seafile.com/seadrive-deb/yangtze stable InRelease
忽略:7 https://linux-clients.seafile.com/seafile-deb/yangtze stable InRelease
忽略:6 https://linux-clients.seafile.com/seadrive-deb/yangtze stable InRelease
忽略:7 https://linux-clients.seafile.com/seafile-deb/yangtze stable InRelease
忽略:6 https://linux-clients.seafile.com/seadrive-deb/yangtze stable InRelease
忽略:7 https://linux-clients.seafile.com/seafile-deb/yangtze stable InRelease
错误:6 https://linux-clients.seafile.com/seadrive-deb/yangtze stable InRelease
Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake: Error in the certificate verification. [IP: 3.86.184.216 443]
错误:7 https://linux-clients.seafile.com/seafile-deb/yangtze stable InRelease
Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake: Error in the certificate verification. [IP: 3.86.184.216 443]
正在读取软件包列表... 完成
正在分析软件包的依赖关系树... 完成
正在读取状态信息... 完成
所有软件包均为最新。
W: 无法下载 https://linux-clients.seafile.com/seadrive-deb/yangtze/dists/stable/InRelease Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake: Error in the certificate verification. [IP: 3.86.184.216 443]
W: 无法下载 https://linux-clients.seafile.com/seafile-deb/yangtze/dists/stable/InRelease Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake: Error in the certificate verification. [IP: 3.86.184.216 443]
W: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。