sudo pacman -Syu
:: Synchronizing package databases…
core is up to date
extra is up to date
community is up to date
multilib is up to date
:: Starting full system upgrade…
resolving dependencies…
looking for conflicting packages…
Packages (5) file-5.41-1 linux514-5.14.14-1 manjaro-zsh-config-0.21-1 virtualbox-guest-utils-6.1.28-2 zensu-0.3-2
Total Installed Size: 118.07 MiB
Net Upgrade Size: 0.23 MiB
:: Proceed with installation? [Y/n]
(5/5) checking keys in keyring [###############################################################################################################] 100%
(5/5) checking package integrity [###############################################################################################################] 100%
error: linux514: signature from “Manjaro Build Server build@manjaro.org” is invalid
:: File /var/cache/pacman/pkg/linux514-5.14.14-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).