APT reports "/usr/sbin/grub-mkconfig: 13: /etc/default/grub: After: not found" and "repository does not have a Release file"
32712
/usr/sbin/grub-mkconfig: 35: /etc/default/grub: FROM:: not found
102708
Apt "could not find a distribution template" error
92739
E: The repository 'http://ppa.launchpad.net/jonathonf/python-3.6/ubuntu disco Release' does not have a Release file
44683
Problem with sudo apt update in Ubuntu 18.04: Post-Invoke-Success if /usr/bin/test -w /var/lib/command-not-found/
130650
E: The repository 'http//archive.canonical.com precise Release' is not signed
339
How to resolve "Failed to download repository information"?
83216
apt get update missing release file
63320
Ubuntu repository does not have a Release file
11671
"Unable to locate package" while trying to install packages with APT
95210
APT wedged by kernel version mismatch
115722
Apt sources.list problem , packages not found?
38110
Error sudo: add-apt-repository: command not found
8868
error: file '/grub/i386-pc/normal.mod' not found
70568
dpkg: unrecoverable fatal error, aborting: files list file for package 'linux-generic' is missing final newline
34529
Files list file for package missing -- dpkg warning
72336
update-alternatives: error: alternative path /lib/plymouth/themes/Lmint/Lmint.plymouth doesn't exist
113442
apt-get not working on Ubuntu 16.04, problems with kernel packages