SNMP agent item on host failed first network error

[jangar]

Hi,

i'm configuring Zabbix 5. I have been configured some devices and zabbix working well.
For 4x D-Link DGS-3130 Switch with snmp 1 / 2 configured i have this error

SNMP agent item "system.uptime[sysUpTime.0]" on host failed: first network error, wait for 15 seconds

and them

resuming SNMP agent checks on host "192.168.X.y": connection restored

but is ok if i run

snmpwalk -c CommName -v 1 <IP>

Zabbix is problem? or Switch?

Below Zabbix Configuration




Below Switch SNMP Configuration: