I’ve also got an issue here. I have the exact same version as OP. I’m getting 404 from apt-get update for all of the repositories. I pinged the IP and it does work. Basically it looks as if the files that apt is trying to update with don’t exist on the target. Any help is appreciated.
Debug token:
https://tricorder.pi-hole.net/MawzR2SU/
Pi-hole version is v5.6 (Latest: v5.8.1)
AdminLTE version is v5.8 (Latest: v5.10.1)
FTL version is v5.11 (Latest: v5.13)
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sudo apt-get update
[truncated due to not being able to post more than 5 links as a new user]
404 Not Found [IP: 91.189.88.142 80]
Reading package lists... Done
E: The repository 'http://ports.ubuntu.com/ubuntu-ports groovy Release' no longer has a Release file.
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: The repository 'http://ports.ubuntu.com/ubuntu-ports groovy-updates Release' no longer has a Release file.
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: The repository 'http://ports.ubuntu.com/ubuntu-ports groovy-backports Release' no longer has a Release file.
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: The repository 'http://ports.ubuntu.com/ubuntu-ports groovy-security Release' no longer has a Release file.
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.
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pihole -up
[✗] Update local cache of available packages
Error: Unable to update package cache. Please try "sudo apt-get update"