I am getting an error in the lines of
error: xf86-input-synaptics: signature from "Laurent Carlier <firstname.lastname@example.org>" is unknown trust
:: File /var/cache/pacman/pkg/xf86-input-synaptics-1.9.0-1-x86_64.pkg.tar.xz 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 (PGP signature))
Errors occurred, no packages were upgraded.
for almost all packages.
I might have messed up something. Can someone help me fix this so I can install packages?