HAProxy não inicia

Question

Estou seguindo o tutorial this e configurei meu dispositivo, executando o Ubuntu - 16.04 LTS configurar o HAProxy no meu dispositivo e estou recebendo o seguinte problema ao iniciar o HAProxy usando o comando:

sudo systemctl start haproxy.service gives following error:
Job for haproxy.service failed because the control process exited with error code. See "systemctl status haproxy.service" and "journalctl -xe" for details.

systemctl status haproxy.service gives following error:
● haproxy.service - HAProxy Load Balancer
   Loaded: loaded (/lib/systemd/system/haproxy.service; enabled; vendor preset: enabled)
   Active: inactive (dead) (Result: exit-code) since Tue 2017-02-07 16:02:17 IST; 3min 36s ago
     Docs: man:haproxy(1)
           file:/usr/share/doc/haproxy/configuration.txt.gz
  Process: 987 ExecStartPre=/usr/sbin/haproxy -f ${CONFIG} -c -q (code=exited, status=1/FAILURE)

Feb 07 16:02:16 divij-VirtualBox systemd[1]: haproxy.service: Unit entered failed state.
Feb 07 16:02:16 divij-VirtualBox systemd[1]: haproxy.service: Failed with result 'exit-code'.
Feb 07 16:02:17 divij-VirtualBox systemd[1]: haproxy.service: Service hold-off time over, scheduling restart.
Feb 07 16:02:17 divij-VirtualBox systemd[1]: Stopped HAProxy Load Balancer.
Feb 07 16:02:17 divij-VirtualBox systemd[1]: haproxy.service: Start request repeated too quickly.
Feb 07 16:02:17 divij-VirtualBox systemd[1]: Failed to start HAProxy Load Balancer.

Eu não tenho ideia de onde estou indo errado.