大佬帮忙看看什么问题

[18855849410]

'WARNING: apt does not have a stable CLI interface. Use with caution in scripts.\n', '\n', 'E: Release file for http://mirrors.ustc.edu.cn/ubuntu-ports/dists/focal-updates/InRelease is not valid yet (invalid for another 713d 1h 13min 10s). Updates for this repository will not be applied