Yesterday I gave a command sudo add-apt-repository universe and after that every time I do sudo apt update, these lines come up.
sudo apt update
Hit:1 http://archive.canonical.com/ubuntu hirsute InRelease
Hit:2 http://archive.ubuntu.com/ubuntu hirsute InRelease
Hit:3 http://archive.ubuntu.com/ubuntu hirsute-updates InRelease
Hit:4 http://archive.ubuntu.com/ubuntu hirsute-backports InRelease
Hit:5 http://archive.ubuntu.com/ubuntu hirsute-security InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Skipping acquire of configured file 'universe/binary-i386/Packages' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/binary-amd64/Packages' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/i18n/Translation-en' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/i18n/Translation-en_IN' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/dep11/Components-amd64.yml' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/dep11/icons-48x48.tar' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/dep11/icons-64x64.tar' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/dep11/icons-64x64@2.tar' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'universe/cnf/Commands-amd64' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'universe' (component misspelt in sources.list?)
Is there any way I can revert?
cat /etc/apt/sources.list. Please use code fences to retain line breaks and formatting so we can parse the info. – Nmath Sep 11 '21 at 06:40