Restarting PHP FPM on Envoyer / Forge Sudo Password Error

ON forge documentation it says:

When configuring your server, Forge configures FPM so that it can be restarted without using your server's "sudo" password and suggests following script:

( flock -w 10 9 || exit 1
    echo 'Restarting FPM...'; sudo -S service $FORGE_PHP_FPM reload ) 9>/tmp/fpmlock

When I add it as a deployment hook on envoyer I get

Restarting FPM...
[sudo] password for forge: 
sudo: no password was provided
sudo: a password is required

Any ideas of how to solve this? Thanks