nmb status error: Error - cannot find server

Hi Experts,

I'm facing with systemctl status smb nmb

Code: nmb.service - Samba NMB Daemon
Loaded: loaded (/usr/lib/systemd/system/nmb.service; enabled; vendor preset: disabled)
Active: active (running) since Sat 2024-06-08 21:08:14 WIB; 2min 37s ago
Docs: man:nmbd(8)
man:samba(7)
man:smb.conf(5)
Main PID: 3929 (nmbd)
Status: "nmbd: ready to serve connections..."
CGroup: /system.slice/nmb.service
3929 /usr/sbin/nmbd --foreground --no-process-group

Jun 08 21:08:14 iZk1aa2qin3uxnqh8agvrmZ systemd[1]: Starting Samba NMB Daemon...
Jun 08 21:08:14 iZk1aa2qin3uxnqh8agvrmZ nmbd[3929]: [2024/06/08 21:08:14.564065, 0] ../../lib/util/become_daemon.c:136(daemon_ready)
Jun 08 21:08:14 iZk1aa2qin3uxnqh8agvrmZ systemd[1]: Started Samba NMB Daemon.
Jun 08 21:08:14 iZk1aa2qin3uxnqh8agvrmZ nmbd[3929]: daemon_ready: daemon 'nmbd' finished starting up and ready to serve connections
Jun 08 21:08:29 iZk1aa2qin3uxnqh8agvrmZ nmbd[3929]: [2024/06/08 21:08:29.578453, 0] ../../source3/nmbd/nmbd_become_lmb.c:533(become_local_master_browser)
Jun 08 21:08:29 iZk1aa2qin3uxnqh8agvrmZ nmbd[3929]: become_local_master_browser: Error - cannot find server IZK1AA2QIN3UXNQH8AGVRMZ in workgroup WORKGROUP on subnet 172.18.5.25my /etc/samba/smb.conf:

[global]
workgroup = WORKGROUP
security = user

passdb backend = tdbsam

printing = cups
printcap name = cups
load printers = yes
cups options = raw

#hosts allow = 172.18.5.25 #100.96.1.0/24
# Eth0 & tun1 (OpenVPN)
interfaces = 172.18.5.25 100.96.1.34

[Public]
comment = Public Share
path = /home/public
browsable = yes
guest ok = no
writable = yes
valid users = @everyone

what I missed?