himanshu_chhatwal@Himanshu:~$ sudo apt update
Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
Hit:2 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:3 https://ppa.launchpadcontent.net/blaze/rtbth-dkms/ubuntu jammy InRelease
Hit:4 https://ppa.launchpadcontent.net/kiwixteam/release/ubuntu jammy InRelease
Hit:5 https://deb.nodesource.com/node_19.x jammy InRelease
Hit:6 http://packages.microsoft.com/repos/code stable InRelease
Get:7 https://dl.yarnpkg.com/debian stable InRelease [17.1 kB]
Hit:8 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:9 http://security.ubuntu.com/ubuntu focal-security InRelease
Ign:10 http://security.ubuntu.com/ubuntu impish-security InRelease
Err:11 http://security.ubuntu.com/ubuntu impish-security Release
404 Not Found [IP: 185.125.190.36 80]
Reading package lists... Done
E: The repository 'http://security.ubuntu.com/ubuntu impish-security Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: https://dl.yarnpkg.com/debian/dists/stable/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Translations (main/i18n/Translation-en_IN) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11-icons-small (main/dep11/icons-48x48.tar) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11-icons-hidpi (main/dep11/icons-64x64@2.tar) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Translations (main/i18n/Translation-en_IN) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11-icons-small (main/dep11/icons-48x48.tar) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target DEP-11-icons-hidpi (main/dep11/icons-64x64@2.tar) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list.d/focal-security.list:1`
please help me out as i am stuck