Error on update

[prakash]

prakash@prakash-Lenovo-E41-25:~$ sudo nala update
[sudo] password for prakash:
Error: Index of /ubuntu-mirror/ubuntu/ focal Release
404 Not Found [IP: 2401:7500:fff5:1::50 80]
Error: Index of /ubuntu-mirror/ubuntu/ focal-updates Release
404 Not Found [IP: 2401:7500:fff5:1::50 80]
Error: Index of /ubuntu-mirror/ubuntu/ focal-backports Release
404 Not Found [IP: 2401:7500:fff5:1::50 80]
Error: Index of /ubuntu-mirror/ubuntu/ focal-security Release
404 Not Found [IP: 2401:7500:fff5:1::50 80]
╭─ Updating Package List ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│Updated: https://dl.google.com/linux/chrome/deb stable InRelease [2 KB] │
│No Change: Index of /apt-fast/stable/ubuntu focal InRelease │
│Updated: https://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1 KB] │
│No Change: Index of /zorinos/apps/ubuntu focal InRelease │
│No Change: Index of /zorinos/drivers/ubuntu focal InRelease │
│Ignored: Index of /ubuntu-mirror/ubuntu/ focal InRelease │
│Ignored: Index of /ubuntu-mirror/ubuntu/ focal-updates InRelease │
│Ignored: Index of /ubuntu-mirror/ubuntu/ focal-backports InRelease │
│Ignored: Index of /ubuntu-mirror/ubuntu/ focal-security InRelease │
│No Change: Index of /zorinos/patches/ubuntu focal InRelease │
│Updated: Index of /zorinos/stable/ubuntu focal InRelease [18 KB] │
│No Change: Index of /stable/ focal InRelease │
│No Change: Index of /patches/ focal InRelease │
│No Change: Index of /apps/ focal InRelease │
│No Change: Index of /drivers/ focal InRelease │
│No Change: Files... scar InRelease │
│Fetched 21 KB in 11s (3 KB/s) │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
Error: The repository 'Index of /ubuntu-mirror/ubuntu/ focal Release' no longer has a Release file.
Error: The repository 'Index of /ubuntu-mirror/ubuntu/ focal-security Release' no longer has a Release file.
Warning: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/volian-archive-scar-unstable.list:1 and /etc/apt/sources.list.d/volian-archive-scar-unstable.sources:1
Error: The repository 'Index of /ubuntu-mirror/ubuntu/ focal-backports Release' no longer has a Release file.
Warning: Updating from such a repository can't be done securely
Warning: See apt-secure(8) manpage for repository creation and user configuration details.
Error: The repository 'Index of /ubuntu-mirror/ubuntu/ focal-updates Release' no longer has a Release file.

[Aravisian]

Now... this is odd.
Focal Fossa is still supported.
And... Another thread was just opened on a similar issue:

Getting "Unable to correct problems, you have held broken packages." error on installing winbind

Can you please run sudo apt --fix-broken install Once that is done, run sudo apt update && sudo apt full-upgrade Next, try sudo apt install winbind If it fails again, this may be due to the Samba Devs having applied a security upgrade patch not long ago that was known at the time to unintentionally carry over a 21.04 dependency into the 20.04 repository. The workaround was to completely uninstall Samba - reinstall it, then install Winbind.

At first, I was thinking that the user added a PicoNets repository.

But after seeing your thread, I did some checking.

The Regional Server for India is using Piconets Webworks to host their packages.

Please switch to the Main Server using Software & Updates
Under Download From: Select Main Server.
Close Software & Updates and allow it to refresh.
Next, in terminal, run sudo apt update and ensure that all repositories return a good status.

EDIT: I just contacted the piconets mirror to report the outage, in case they are unaware.

@prakash

Warning: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/volian-archive-scar-unstable.list:1 and /etc/apt/sources.list.d/volian-archive-scar-unstable.sources:1

You can remove the duplicate volian sources file in /etc/apt/sources.list.d/ directory to fix this.