Err:10 https://mirrors.tuna.tsinghua.edu.cn/armbian bionic Release
Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake: Error in the certificate verification. [IP: 101.6.15.130 443]
Hit:11 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic InRelease
Reading package lists... Done
E: The repository 'https://mirrors.tuna.tsinghua.edu.cn/armbian bionic Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
直接忽略证书
apt-get update -o Acquire::https::mirrors.tuna.tsinghua.edu.cn::Verify-Peer=false