linux users are not updating in ranger ui.

I am not able to see new users from linux into ranger ui.

below is the error log of usersync.log

please help to resolve this.

03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hadoop
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: users
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: aapuser
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: aapuser
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: hdfs
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hadoop
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hdfs
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hue
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: yarn
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hadoop
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: hbase
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hadoop
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: rescue
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: rescue
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: mapred
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hadoop
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: hcat
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hadoop
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: systemd-bus-proxy
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: systemd-bus-proxy
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: amb_ranger_admin
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: hive
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: hue
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: hadoop
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: users
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - USER: testuser
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - GROUP: testuser
03 Jan 2019 12:02:15 WARN UnixUserGroupBuilder [UnixUserSyncThread] - DEPRECATED: Unix backend is configured to use /etc/passwd and /etc/group files directly instead of standard system mechanisms.
03 Jan 2019 12:02:15 INFO UserGroupSync [UnixUserSyncThread] - initializing source: org.apache.ranger.unixusersync.process.UnixUserGroupBuilder
03 Jan 2019 12:02:15 INFO UserGroupSync [UnixUserSyncThread] - Begin: initial load of user/group from source==>sink
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - INFO: addPMAccount(testuser2)
03 Jan 2019 12:02:15 DEBUG PolicyMgrUserGroupBuilder [UnixUserSyncThread] - INFO: addPMAccount(testuser3)
03 Jan 2019 12:02:15 INFO UserGroupSync [UnixUserSyncThread] - End: initial load of user/group from source==>sink
03 Jan 2019 12:02:15 INFO UserGroupSync [UnixUserSyncThread] - Done initializing user/group source and sink
03 Jan 2019 12:02:18 INFO UnixAuthenticationService [main] - Enabling Unix Auth Service!
03 Jan 2019 12:02:19 INFO UnixAuthenticationService [main] - Enabling Protocol: [SSLv2Hello]
03 Jan 2019 12:02:19 INFO UnixAuthenticationService [main] - Enabling Protocol: [TLSv1]
03 Jan 2019 12:02:19 INFO UnixAuthenticationService [main] - Enabling Protocol: [TLSv1.1]
03 Jan 2019 12:02:19 INFO UnixAuthenticationService [main] - Enabling Protocol: [TLSv1.2]