Eric Chang says to Ubuntu 台灣社群請問nchc 的mirror 掛了嗎？ Err:1 http://free.nchc.org.tw/ubuntu focal-updates/main amd64 containerd amd64 1.3.3-0ubuntu2.2 404 Not Found [IP: 140.110.240.80 80] Ign:2 http://free.nchc.org.tw/ubuntu focal-security/main amd64 dnsmasq-base amd64 2.80-1.1ubuntu1.2 Err:3 http://free.nchc.org.tw/ubuntu focal-updates/universe amd64 docker.io amd64 19.03.8-0ubuntu1.20.04.2 404 Not Found [IP: 140.110.240.80 80] Err:2 http://free.nchc.org.tw/ubuntu focal-security/main amd64 dnsmasq-base amd64 2.80-1.1ubuntu1.2 404 Not Found [IP: 140.110.240.80 80] E: Failed to fetch http://free.nchc.org.tw/ubuntu/pool/main/c/containerd/containerd_1.3.3-0ubuntu2.2_amd64at Mon, Apr 18, 2022 10:11 AM