unable to start redis-server: Job for redis-server.service failed because a configured resource limit was exceeded

this is the out put getting while trying to start redis-server

Oct 05 12:30:18 sys-admin sudo[1398646]: pam_unix(sudo:session): session opened for user root by developer(uid=0) Oct 05 12:30:23

sys-admin sudo[1398646]: pam_unix(sudo:session): session closed foruser root Oct 05 12:36:34 sys-admin sudo[1398804]: developer :TTY=pts/0 ; PWD=/home/developer ; USER=root ; COMMAND=/bin/systemctlstatus redis Oct 05 12:36:34 sys-admin sudo[1398804]:pam_unix(sudo:session): session opened for user root bydeveloper(uid=0) Oct 05 12:36:34 sys-admin sudo[1398804]:pam_unix(sudo:session): session closed for user root Oct 05 12:36:43sys-admin sudo[1398811]: developer : TTY=pts/0 ; PWD=/home/developer; USER=root ; COMMAND=/bin/systemctl stop redis Oct 05 12:36:43sys-admin sudo[1398811]: pam_unix(sudo:session): session opened foruser root by developer(uid=0) Oct 05 12:36:43 sys-admin systemd[1]:Stopped Advanced key-value store.-- Subject: Unit redis-server.service has finished shutting down-- Defined-By: systemd-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

-- Unit redis-server.service has finished shutting down. Oct 05 12:36:43 sys-admin sudo[1398811]: pam_unix(sudo:session): sessionclosed for user root Oct 05 12:36:47 sys-admin sudo[1398816]:developer : TTY=pts/0 ; PWD=/home/developer ; USER=root ;COMMAND=/bin/systemctl status redis Oct 05 12:36:47 sys-adminsudo[1398816]: pam_unix(sudo:session): session opened for user rootby developer(uid=0) Oct 05 12:36:47 sys-admin sudo[1398816]:pam_unix(sudo:session): session closed for user root Oct 05 12:36:52sys-admin sudo[1398821]: developer : TTY=pts/0 ; PWD=/home/developer; USER=root ; COMMAND=/bin/systemctl stop redis Oct 05 12:36:52sys-admin sudo[1398821]: pam_unix(sudo:session): session opened foruser root by developer(uid=0) Oct 05 12:36:52 sys-admin systemd[1]:Stopped Advanced key-value store.-- Subject: Unit redis-server.service has finished shutting down-- Defined-By: systemd-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

-- Unit redis-server.service has finished shutting down. Oct 05 12:36:52 sys-admin sudo[1398821]: pam_unix(sudo:session): sessionclosed for user root Oct 05 12:36:55 sys-admin sudo[1398826]:developer : TTY=pts/0 ; PWD=/home/developer ; USER=root ;COMMAND=/bin/systemctl stop redis Oct 05 12:36:55 sys-adminsudo[1398826]: pam_unix(sudo:session): session opened for user rootby developer(uid=0) Oct 05 12:36:55 sys-admin systemd[1]: StoppedAdvanced key-value store.-- Subject: Unit redis-server.service has finished shutting down-- Defined-By: systemd-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

-- Unit redis-server.service has finished shutting down. Oct 05 12:36:55 sys-admin sudo[1398826]: pam_unix(sudo:session): sessionclosed for user root Oct 05 12:37:00 sys-admin sudo[1398831]:developer : TTY=pts/0 ; PWD=/home/developer ; USER=root ;COMMAND=/bin/systemctl stop redis Oct 05 12:37:00 sys-adminsudo[1398831]: pam_unix(sudo:session): session opened for user rootby developer(uid=0) Oct 05 12:37:00 sys-admin systemd[1]: StoppedAdvanced key-value store.-- Subject: Unit redis-server.service has finished shutting down-- Defined-By: systemd-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

-- Unit redis-server.service has finished shutting down. Oct 05 12:37:00 sys-admin sudo[1398831]: pam_unix(sudo:session): sessionclosed for user root Oct 05 12:37:03 sys-admin sudo[1398834]:developer : TTY=pts/0 ; PWD=/home/developer ; USER=root ;COMMAND=/bin/systemctl status redis Oct 05 12:37:03 sys-adminsudo[1398834]: pam_unix(sudo:session): session opened for user rootby developer(uid=0) Oct 05 12:37:03 sys-admin sudo[1398834]:pam_unix(sudo:session): session closed for user root