Hit:1 http://si.archive.ubuntu.com/ubuntu artful InRelease
Hit:2 http:// si.archive.ubuntu.com/ubuntu artful-updates InRelease
Hit:3 http:// si.archive.ubuntu.com/ubuntu artful-backports InRelease
Hit:4 http:// download.virtualbox.org/virtualbox/debian xenial InRelease
Err:3 http:// si.archive.ubuntu.com/ubuntu artful-backports InRelease
Splitting up /var/lib/apt/lists/si.archive.ubuntu.com_ubuntu_dists_artful-backports_InRelease into data and signature failed
Hit:5 https:// updates.signal.org/desktop/apt xenial InRelease
Get:6 http:// security.ubuntu.com/ubuntu artful-security InRelease [78,6 kB]
Hit:7 http:// security.ubuntu.com/ubuntu artful-security/main amd64 Packages
Ign:7 http:// security.ubuntu.com/ubuntu artful-security/main amd64 Packages
Hit:8 http:// security.ubuntu.com/ubuntu artful-security/main i386 Packages
Hit:9 http:// security.ubuntu.com/ubuntu artful-security/main Translation-en
Hit:10 http:// security.ubuntu.com/ubuntu artful-security/main amd64 DEP-11 Metadata
Hit:11 http:// security.ubuntu.com/ubuntu artful-security/main DEP-11 64x64 …apt ×1