Running apt update results in 404 not found on supported version
65
What can I do if a repository/PPA does not have a Release file?
113145
What does 'apt-get install update' do?
158674
How do I get `apt-get update` to work on a machine with no internet access and manually assigned IP address?
85009
`apt update` failed on Debian Linux
107009
ubuntu 18.04 apt-get upgrade problem "redirection loop encountered."
18622
How do I install a different Python version using apt-get?
145400
Error when trying sudo apt-get update - Python related?
113442
apt-get not working on Ubuntu 16.04, problems with kernel packages
74763
Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution)
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?
130118
Ubunutu 18.04 Updates 404 error
66065
"Unable to connect" error with apt-get?
19288
Update manager doesn't offer an upgrade to the new release
123413
Will apt-get dist-upgrade upgrade my system to a newer version?
6173
"method driver /usr/lib/apt/methods/https could not be found" update error
72336
update-alternatives: error: alternative path /lib/plymouth/themes/Lmint/Lmint.plymouth doesn't exist
13720
apt-get update fails to fetch files, “Temporary failure resolving …” error