problems updating

[Shandor297]

============ Log ===========

Obj:2 http://archive.canonical.com/ubuntu jammy InRelease
Obj:3 http://security.ubuntu.com/ubuntu jammy-security InRelease
Obj:7 https://ppa.launchpadcontent.net/kdenliv...ble/ubuntu jammy InRelease
Obj:8 http://us.archive.ubuntu.com/ubuntu jammy InRelease
Obj:9 https://dl.google.com/linux/chrome/deb stable InRelease
Obj:10 https://packages.microsoft.com/repos/edge stable InRelease
Ign:1 https://www.dafium.es/ubuntu jammy InRelease
Obj:11 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease
Ign:12 https://mkvtoolnix.download/debian stretch InRelease
Obj:14 http://repo.linuxliteos.com/linuxlite fluorite InRelease
Ign:4 https://www.dafium.es/ubuntu jammy-updates InRelease
Obj:15 https://mkvtoolnix.download/debian stretch Release
Obj:16 https://ppa.launchpadcontent.net/linuxup...pps/ubuntu jammy InRelease
Ign:5 https://www.dafium.es/ubuntu jammy-backports InRelease
Obj:18 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease
Ign:6 https://www.dafium.es/ubuntu jammy-security InRelease
Err:13 https://www.dafium.es/ubuntu jammy Release
  404  Not Found [IP: 188.114.96.5 443]
Err:17 https://www.dafium.es/ubuntu jammy-updates Release
  404  Not Found [IP: 188.114.96.5 443]
Obj:21 https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu jammy InRelease
Err:19 https://www.dafium.es/ubuntu jammy-backports Release
  404  Not Found [IP: 188.114.96.5 443]
Err:20 https://www.dafium.es/ubuntu jammy-security Release
  404  Not Found [IP: 188.114.96.5 443]
Obj:22 https://ppa.launchpadcontent.net/opensho...ppa/ubuntu jammy InRelease
Obj:23 https://ppa.launchpadcontent.net/qbittor...ble/ubuntu jammy InRelease
Leyendo lista de paquetes...
E: El repositorio «http://dafi.inf.um.es/ubuntu jammy Release» no tiene un fichero de Publicación.
E: El repositorio «http://dafi.inf.um.es/ubuntu jammy-updates Release» no tiene un fichero de Publicación.
E: El repositorio «http://dafi.inf.um.es/ubuntu jammy-backports Release» no tiene un fichero de Publicación.
E: El repositorio «http://dafi.inf.um.es/ubuntu jammy-security Release» no tiene un fichero de Publicación.
W: https://mkvtoolnix.download/debian/dists...elease.gpg: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.

[trinidad]

https://mkvtoolnix.download/debian/dists/bullseye/
Newer package.TC

[stevef]

Also, it looks like you are trying to use DAFI de la Universidad de Murcia as an ubuntu download server, but there may be a problem with it.

You may need to adapt these for the Spanish equivalents.

Click 'Menu' and begin typing the word 'software' into the search box
When you see 'Software & Updates' suggested click on it.
On the 'Ubuntu Software' tab, check the 'Download from' pull down.
If it is set to 'Server for Spain', then 'dafi.inf.um.es' may be selected there - change it to a different server.
Enter your password if requested.
Then try again.