Package kde-applications-meta not installing

when i tried to install kde-applications-meta package in manjaro
it throwed this error
error: okular: signature from “Ray Sherwin” is marginal trust
:: File /var/cache/pacman/pkg/okular-23.08.2-2-aarch64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] Y
error: failed to commit transaction (invalid or corrupted package)
Errors occurred, no packages were upgraded.

Hi @Hasib_R,

Please see