#systemctl start vncserver@:1.service
Job for vncserver@:1.service failed. See 'systemctl status vncserver@:1.service' and 'journalctl -xn' for details.

vncserver@:1.service - Remote desktop service (VNC)
   Loaded: loaded (/etc/systemd/system/vncserver@.service; disabled)
   Active: failed (Result: exit-code) since Thu 2015-10-22 14:35:57 EDT; 13s ago
  Process: 6640 ExecStart=/sbin/runuser -l MyUser -c /usr/bin/vncserver %i -geometry 1280x1024 (code=exited, status=98)
  Process: 6637 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
systemd[1]: vncserver@:1.service: control process exited, code=exited status=98
systemd[1]: Failed to start Remote desktop service (VNC).
systemd[1]: Unit vncserver@:1.service entered failed state.

$ cd /tmp/.X11-unix/

$ ll

$ sudo rm X4

$ systemctl restart vncserver@:4.service