● stunnel4.service - LSB: Start or stop stunnel 4.x (SSL tunnel for network daemons)
   Loaded: loaded (/etc/init.d/stunnel4; bad; vendor preset: enabled)
   Active: failed (Result: exit-code) since Tue 2017-11-28 13:00:58 +0330; 1min 39s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 18117 ExecStop=/etc/init.d/stunnel4 stop (code=exited, status=0/SUCCESS)
  Process: 29251 ExecStart=/etc/init.d/stunnel4 start (code=exited, status=1/FAILURE)

Nov 28 13:00:58 Think systemd[1]: Starting LSB: Start or stop stunnel 4.x (SSL tunnel for network daemons)...
Nov 28 13:00:58 Think stunnel4[29251]: Starting SSL tunnels: /etc/stunnel/stunnel.conf: 2017.11.28 13:00:58 LOG3[ui]: Cannot create pid file /var/run/stunnel.pid
Nov 28 13:00:58 Think stunnel4[29251]: 2017.11.28 13:00:58 LOG3[ui]: create: Permission denied (13)
Nov 28 13:00:58 Think stunnel4[29251]: failed
Nov 28 13:00:58 Think stunnel4[29251]: You should check that you have specified the pid= in you configuration file
Nov 28 13:00:58 Think systemd[1]: stunnel4.service: Control process exited, code=exited status=1
Nov 28 13:00:58 Think systemd[1]: Failed to start LSB: Start or stop stunnel 4.x (SSL tunnel for network daemons).
Nov 28 13:00:58 Think systemd[1]: stunnel4.service: Unit entered failed state.
Nov 28 13:00:58 Think systemd[1]: stunnel4.service: Failed with result 'exit-code'.