Setting up environment
Ign:1 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 libexif12 amd64 0.6.21-6ubuntu0.3
Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libexempi8 amd64 2.5.1-1build1 [528 kB]
Err:1 http://security.ubuntu.com/ubuntu focal-updates/main amd64 libexif12 amd64 0.6.21-6ubuntu0.3
404 Not Found [IP: 91.189.88.152 80]
Get:3 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 eog amd64 3.36.3-0ubuntu1 [421 kB]
Err:4 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 libnm0 amd64 1.22.10-1ubuntu2.1
404 Not Found [IP: 91.189.88.152 80]
Err:5 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 gir1.2-nm-1.0 amd64 1.22.10-1ubuntu2.1
404 Not Found [IP: 91.189.88.152 80]
Err:6 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 im-config all 0.44-1ubuntu1.2
404 Not Found [IP: 91.189.88.152 80]
Err:7 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 network-manager amd64 1.22.10-1ubuntu2.1
404 Not Found [IP: 91.189.88.152 80]
Fetched 949 kB in 1s (1531 kB/s)
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/libe/libexif/libexif12_0.6.21-6ubuntu0.3_amd64.deb 404 Not Found [IP: 91.189.88.152 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/n/network-manager/libnm0_1.22.10-1ubuntu2.1_amd64.deb 404 Not Found [IP: 91.189.88.152 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/n/network-manager/gir1.2-nm-1.0_1.22.10-1ubuntu2.1_amd64.deb 404 Not Found [IP: 91.189.88.152 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/i/im-config/im-config_0.44-1ubuntu1.2_all.deb 404 Not Found [IP: 91.189.88.152 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/n/network-manager/network-manager_1.22.10-1ubuntu2.1_amd64.deb 404 Not Found [IP: 91.189.88.152 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Edited by Pierre Augier