apt update error

[sonichy]

N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository 'http://cn.archive.ubuntu.com/ubuntu noble InRelease' is no longer signed.
E: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/noble/InRelease  403  Forbidden [IP: 101.6.15.130 80]
E: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/noble-updates/InRelease  403  Forbidden [IP: 101.6.15.130 80]
E: The repository 'http://cn.archive.ubuntu.com/ubuntu noble-updates InRelease' is no longer signed.
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.
E: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/noble-backports/InRelease  403  Forbidden [IP: 101.6.15.130 80]
E: The repository 'http://cn.archive.ubuntu.com/ubuntu noble-backports InRelease' is no longer signed.
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.

[Anduin2017]

How did you get into this situation?

Maybe try this:

https://docs.anduinos.com/Install/Select-Best-Apt-Source.html

[sonichy]

Wonderful shell, put it into system !

[Anduin2017]

Written by GPT 🤣