The correct file location for systemd-timesyncd.service should be:
$ sudo systemctl enable systemd-timesyncd
Failed to enable unit: Unit file /etc/systemd/system/systemd-timesyncd.service is masked.
$ file /etc/systemd/system/systemd-timesyncd.service
/etc/systemd/system/systemd-timesyncd.service: symbolic link to /dev/null
The correct file location for systemd- timesyncd. service should be:
$ sudo systemctl enable systemd-timesyncd system/ systemd- timesyncd. service is masked. system/ systemd- timesyncd. service system/ systemd- timesyncd. service: symbolic link to /dev/null
Failed to enable unit: Unit file /etc/systemd/
$ file /etc/systemd/
/etc/systemd/