Gitlab-mailroom.service cannot start

Mailroom service cannot start

sudo systemctl status gitlab-mailroom.service
Warning: The unit file, source configuration file or drop-ins of gitlab-mailroom.service changed on disk. Run ‘systemctl daemon-reload’ to reload units.
● gitlab-mailroom.service
Loaded: bad-setting (Reason: Unit gitlab-mailroom.service has a bad unit file setting.)
Drop-In: /etc/systemd/system/gitlab-mailroom.service.d
└─override.conf
Active: inactive (dead)

I do everything same as documents but not working.
I mentioned configs below
sudo systemctl edit gitlab.target
[Unit]
Wants=gitlab-mailroom.service

sudo systemctl edit gitlab-mailroom.service
[Unit]
Wants=redis-server.service
After=redis-server.service

sudo systemctl start gitlab-mailroom.service

Warning: The unit file, source configuration file or drop-ins of gitlab-mailroom.service changed on disk. Run ‘systemctl daemon-reload’ to reload units.
● gitlab-mailroom.service
Loaded: bad-setting (Reason: Unit gitlab-mailroom.service has a bad unit file setting.)
Drop-In: /etc/systemd/system/gitlab-mailroom.service.d
└─override.conf
Active: inactive (dead)

Not enough information. If you want assistance here you need to explain in far more detail what you are trying to do, what you configured, what documentation you were using, errors from log files.