tomcat failed

jalal@klein:~/computer_vision/XNAT/xnat$ systemctl status tomcat8.service
● tomcat8.service - LSB: Start Tomcat.
   Loaded: loaded (/etc/init.d/tomcat8)
   Active: failed (Result: exit-code) since Fri 2016-09-02 12:28:06 CDT; 27s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 11638 ExecStop=/etc/init.d/tomcat8 stop (code=exited, status=0/SUCCESS)
  Process: 11651 ExecStart=/etc/init.d/tomcat8 start (code=exited, status=1/FAILURE)

Sep 02 12:28:01 klein systemd[1]: Starting LSB: Start Tomcat....
Sep 02 12:28:01 klein tomcat8[11651]: * Starting Tomcat servlet engine tomcat8
Sep 02 12:28:06 klein tomcat8[11651]: ...fail!
Sep 02 12:28:06 klein systemd[1]: tomcat8.service: Control process exited, ...=1
Sep 02 12:28:06 klein systemd[1]: Failed to start LSB: Start Tomcat..
Sep 02 12:28:06 klein systemd[1]: tomcat8.service: Unit entered failed state.
Sep 02 12:28:06 klein systemd[1]: tomcat8.service: Failed with result 'exit...'.
Hint: Some lines were ellipsized, use -l to show in full.
jalal@klein:~/computer_vision/XNAT/xnat$ systemctl status -l tomcat8.service
● tomcat8.service - LSB: Start Tomcat.
   Loaded: loaded (/etc/init.d/tomcat8)
   Active: failed (Result: exit-code) since Fri 2016-09-02 12:28:06 CDT; 53s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 11638 ExecStop=/etc/init.d/tomcat8 stop (code=exited, status=0/SUCCESS)
  Process: 11651 ExecStart=/etc/init.d/tomcat8 start (code=exited, status=1/FAILURE)

Sep 02 12:28:01 klein systemd[1]: Starting LSB: Start Tomcat....
Sep 02 12:28:01 klein tomcat8[11651]: * Starting Tomcat servlet engine tomcat8
Sep 02 12:28:06 klein tomcat8[11651]: ...fail!
Sep 02 12:28:06 klein systemd[1]: tomcat8.service: Control process exited, code=exited status=1
Sep 02 12:28:06 klein systemd[1]: Failed to start LSB: Start Tomcat..
Sep 02 12:28:06 klein systemd[1]: tomcat8.service: Unit entered failed state.
Sep 02 12:28:06 klein systemd[1]: tomcat8.service: Failed with result 'exit-code'.