I am having some problems with my repositories. It happened suddenly without I did anything and I cant understand why. I am running ubuntu 19.10. I tried many things like resetting my source.list or modifying the main server in the software-gtk application. WHen I change the server, I get a "refresh softwares" screen that leads to a ubuntu error. Afterwards, I cant access the software-gtk anymore. I cannot install anything anymore with the command apt-get install packagename. If I use aptitude and make an update: picture
Below you will find the result of sudo apt update (the end because otherwise it is too long):
Ign:148 http://security.ubuntu.com/ubuntu eoan-security/multiverse DEP-11 64x64 Icons
Ign:149 http://security.ubuntu.com/ubuntu eoan-security/multiverse all c-n-f Metadata
Ign:150 http://security.ubuntu.com/ubuntu eoan-security/multiverse amd64 c-n-f Metadata
Err:11 http://security.ubuntu.com/ubuntu eoan-security/universe Sources
404 Not Found [IP: 2001:67c:1562::15 80]
Ign:14 http://security.ubuntu.com/ubuntu eoan-security/restricted Sources
Ign:18 http://security.ubuntu.com/ubuntu eoan-security/multiverse Sources
Ign:21 http://security.ubuntu.com/ubuntu eoan-security/main Sources
Ign:24 http://security.ubuntu.com/ubuntu eoan-security/main i386 Packages
Ign:28 http://security.ubuntu.com/ubuntu eoan-security/main amd64 Packages
Ign:31 http://security.ubuntu.com/ubuntu eoan-security/main all Packages
Ign:34 http://security.ubuntu.com/ubuntu eoan-security/main Translation-en_US
Ign:36 http://security.ubuntu.com/ubuntu eoan-security/main Translation-en
Ign:40 http://security.ubuntu.com/ubuntu eoan-security/main amd64 DEP-11 Metadata
Ign:43 http://security.ubuntu.com/ubuntu eoan-security/main all DEP-11 Metadata
Reading package lists... Done
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/eoan/restricted/source/Sources 404 Not Found [IP: 2001:67c:1360:8001::24 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/eoan-updates/restricted/source/Sources 404 Not Found [IP: 2001:67c:1360:8001::24 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/eoan-security/universe/source/Sources 404 Not Found [IP: 2001:67c:1562::15 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
And here is my source.list file:
deb [trusted=yes] http://archive.ubuntu.com/ubuntu eoan main universe restricted multiverse
deb-src [trusted=yes] http://archive.ubuntu.com/ubuntu eoan main universe restricted multiverse #Added by software-properties
deb [trusted=yes] http://security.ubuntu.com/ubuntu/ eoan-security main universe restricted multiverse
deb-src [trusted=yes] http://security.ubuntu.com/ubuntu/ eoan-security main universe restricted multiverse #Added by software-properties
deb [trusted=yes] http://archive.ubuntu.com/ubuntu eoan-updates main universe restricted multiverse
deb-src [trusted=yes] http://archive.ubuntu.com/ubuntu eoan-updates main universe restricted multiverse #Added by software-properties
I do not know what to do as I would like to avoid reinstalling the system... Any idea of what is happening? Thanks in advance for your help.