Disastrous Arch Linux and KDE Plasma 6.8 Update
ONLY UPDATE INSIDE A TTY!!!
I just updated to plasma 6.8 while I was inside the X11 session. The X11 session is gone in the new version. This caused my entire login session to terminate during the update.
My PC couldn't boot anymore because the Kernel, LTS Kernel and fallback images from /boot were gone. Pacman was terminated midway. I even ran it inside a tmux session but that didn't help.