i did update my machine with pacman -Syu. after rebooting, i cannot login. i con see this error Failed to start Virtual Console Setup a tiny second right before log in screen. i had to capture it in slow mo to able to read it. i attach the image below.
and on the login, after i enter my username and hit enter it just hangs for a while without asking the password and asks for username again. it acts like when you enter wrong password.
Fix
turns out /bin some how got messed up. thanks to @wwwgem, i looked into system logs (journalctl) and fixed it
I'll put the link to the wiki here again ;) https://wiki.archlinux.org/title/Chroot
"Run arch-chroot with the new root directory as first argument:
You can now do most of the operations available from your existing installation. Some tasks which needs D-Bus will not work as noted in #Usage"