Having a problem with pamac/pacman

So basically when I try to install anything on pamac GUI it gives a popup that says invalid or corrupted database and when I try to use pacman on terminal it gives me the following

sudo pacman -S lutris                                        INT ✘ 

[sudo] password for kanye_east: 
error: GPGME error: No data
error: database 'core' is not valid (invalid or corrupted database (PGP signature))

Hi there,

As you are creating a new thread, but this specific error is covered both in the wiki, and dozens of forum posts … does that you mean you have tried the fixes noted in those places and they do not work?