Cannot update, error 404 for every mirror

[freggel.doe]

@zilexa

edit:
I checked but there is no /var/lib/pacman/db.lck file

try this:

@brahma

run these:
sudo rm /var/lib/pacman/db.lck
If you get: cannot remove ‘/var/lib/pacman/db.lck’: No such file or directory; use this:
sudo rm /var/tmp/pamac/dbs/db.lck