Ubuntu 23.10 – Update Problems (Some index files failed to download)

I can’t seem to get apt to update – aside from having deb-src packages enabled and docker and mozilla repos my apt config should be fairly standard (and it doesn’t seem like they’re the problem anyway) – anyone know what I can do to fix this?

$ sudo apt-get update
Hit:1 http://gb.archive.ubuntu.com/ubuntu mantic InRelease
Hit:2 http://gb.archive.ubuntu.com/ubuntu mantic-updates InRelease
Hit:3 http://gb.archive.ubuntu.com/ubuntu mantic-backports InRelease
Hit:4 https://download.docker.com/linux/ubuntu mantic InRelease
Hit:5 http://security.ubuntu.com/ubuntu mantic-security InRelease
Get:6 https://packages.mozilla.org/apt mozilla InRelease [1,350 B]
Get:7 https://packages.mozilla.org/apt mozilla/main amd64 Packages [81.4 kB]
Err:8 https://packages.mozilla.org/apt mozilla/main all Packages
  400  Bad Request [IP: 34.160.78.70 443]
Fetched 81.4 kB in 1s (65.0 kB/s)
Reading package lists... Done
E: Failed to fetch https://packages.mozilla.org/apt/dists/mozilla/main/binary-all/Packages  400  Bad Request [IP: 34.160.78.70 443]
E: Some index files failed to download. They have been ignored, or old ones used instead.
Asked By: John Graham

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Doing apt-get clean before trying the update worked, thanks for the link @ChuckLiu

Answered By: John Graham
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