When I try to update this happens. The only thing I changed before running this update was delete a repo using Synaptic Package Manager. Please help me out to fix this error. :~/Folder$ sudo apt update Hit:1 https://download.docker.com/linux/ubuntu bionic InRelease Hit:2 http://us.archive.ubuntu.com/ubuntu bionic InRelease Get:3 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Hit:4 http://ppa.launchpad.net/elementary-os/stable/ubuntu bionic InRelease Get:5 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:6 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] Hit:7 http://ppa.launchpad.net/numix/ppa/ubuntu bionic InRelease Hit:8 http://ppa.launchpad.net/elementary-os/os-patches/ubuntu bionic InRelease Hit:9 http://ppa.launchpad.net/philip.scott/elementary-tweaks/ubuntu bionic InRelease Hit:10 http://ppa.launchpad.net/ricotz/docky/ubuntu bionic InRelease Hit:11 http://ppa.launchpad.net/teejee2008/ppa/ubuntu bionic InRelease Hit:12 http://ppa.launchpad.net/ubuntuhandbook1/apps/ubuntu bionic InRelease Hit:13 http://ppa.launchpad.net/utappia/stable/ubuntu bionic InRelease Err:14 http://packages.elementary.io/appcenter bionic InRelease Could not connect to packages.elementary.io:80 (2606:4700:3034::681c:52c), connection timed out Could not connect to packages.elementary.io:80 (104.28.4.44), connection timed out Could not connect to packages.elementary.io:80 (2606:4700:3030::681c:42c), connection timed out Could not connect to packages.elementary.io:80 (104.28.5.44), connection timed out Fetched 252 kB in 31s (8,099 B/s) Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. W: Failed to fetch http://packages.elementary.io/appcenter/dists/bionic/InRelease Could not connect to packages.elementary.io:80 (2606:4700:3034::681c:52c), connection timed out Could not connect to packages.elementary.io:80 (104.28.4.44), connection timed out Could not connect to packages.elementary.io:80 (2606:4700:3030::681c:42c), connection timed out Could not connect to packages.elementary.io:80 (104.28.5.44), connection timed out W: Some index files failed to download. They have been ignored, or old ones used instead.