Ubuntu Linux 22.04.3 更新问题

Ubuntu Linux 22.04.3 更新问题

尝试执行任何更新时出现以下错误。我可以通过主机或 DNS 顺利 ping google

Err:1 http://gb.archive.ubuntu.com/ubuntu jammy InRelease
  403  Forbidden [IP: 192.168.30.10 3128]
Err:2 http://gb.archive.ubuntu.com/ubuntu jammy-updates InRelease
  403  Forbidden [IP: 192.168.30.10 3128]
Err:3 http://gb.archive.ubuntu.com/ubuntu jammy-backports InRelease
  403  Forbidden [IP: 192.168.30.10 3128]

另外我也遇到了这些错误

N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository 'http://gb.archive.ubuntu.com/ubuntu jammy InRelease' is no longer signed.
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/jammy/InRelease  403  Forbidden [IP: 192.168.30.10 3128]

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