Cannot start service on Client linux.

I install Networker Client on Redhat 8 with Networker Client version 19.10.
But I cannot start service networker on client. Networker service start then stop immediately.
Please help me with log:

[root@ps1datasyn02 res]# systemctl status networker | more
● networker.service - EMC NetWorker. A backup and restoration software package.
   Loaded: loaded (/usr/lib/systemd/system/networker.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Thu 2024-06-20 10:49:55 +07; 13min ago
  Process: 10205 ExecStop=/opt/nsr/admin/networker.sh stop (code=exited, status=0/SUCCESS)
  Process: 10143 ExecStart=/opt/nsr/admin/networker.sh start (code=exited, status=0/SUCCESS)
 Main PID: 10156 (code=exited, status=0/SUCCESS)

Jun 20 10:49:41 ps1datasyn02 systemd[1]: Starting EMC NetWorker. A backup and restoration software package....
Jun 20 10:49:41 ps1datasyn02 networker.sh[10192]: 173680:nsrpsd: RPC client handle: Connection refused.
Jun 20 10:49:41 ps1datasyn02 networker.sh[10192]: 172089:nsrpsd: Unable to create the connection with 'nsrexec' to host 'local
host' with address '127.0.0.1' at port number 7937.
Jun 20 10:49:41 ps1datasyn02 networker.sh[10192]: 173677:nsrpsd: Check whether the client services are running on the host '12
7.0.0.1'.
Jun 20 10:49:41 ps1datasyn02 networker.sh[10192]: Error: Unable to open connection to local ladb: Remote system error - Connec
tion refused
Jun 20 10:49:41 ps1datasyn02 systemd[1]: Started EMC NetWorker. A backup and restoration software package..
Jun 20 10:49:55 ps1datasyn02 systemd[1]: networker.service: Succeeded.

Log on daemon.raw:

173680:nsrpurge_adhoclog: RPC client handle: Connection refused.
172089:nsrpurge_adhoclog: Unable to create the connection with 'nsrexec' to host 'localhost' with address '127.0.0.1' at port number 7937.
173677:nsrpurge_adhoclog: Check whether the client services are running on the host '127.0.0.1'.
173680 1718855394 3 2 111 771733248 10156 0 ps1datasyn02.g-bank.com.vn nsrexecd RPC error 22 RPC client handle: %s. 1 24 18 Connection refused
172089 1718855394 3 2 111 771733248 10156 0 ps1datasyn02.g-bank.com.vn nsrexecd RPC error 91 Unable to create the connection with '%s' to host '%s' with address '%s' at port number %d. 4 20 7 nsrexec 12 9 localhost 14 9 127.0.0.1 1 4 7937
173677 1718855394 5 2 111 771733248 10156 0 ps1datasyn02.g-bank.com.vn nsrexecd RPC critical 63 Check whether the client services are running on the host '%s'. 1 12 9 127.0.0.1
173680:nsrpurge_adhoclog: RPC client handle: Connection refused.
172089:nsrpurge_adhoclog: Unable to create the connection with 'nsrexec' to host 'localhost' with address '127.0.0.1' at port number 7937.
173677:nsrpurge_adhoclog: Check whether the client services are running on the host '127.0.0.1'.


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Thanks and besr regards,