Je ne peux pas finaliser l'installation du serveur, car il manque des paquets : E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation
root@wapt:~# apt install gnupg
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package gnupg is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
Merci d'avance pour votre aide

TB