Resolved:
Deleted the gnupg folder in etc/pacman.d
wget https://github.com/endeavouros-team/mirrors/releases/download/mirror2/endeavouros-keyring-1-4-any.pkg.tar.xz
sudo pacman -U endeavouros-keyring-1-4-any.pkg.tar.xz
sudo pacman -U endeavouros-mirrorlist-1-10-any.pkg.tar.xz
sudo pacman-key --init
sudo pacman-key --populate archlinux endeavouros
sudo pacman-key --refresh-keys
sudo pacman -Syy
sudo pacman -Syu