Error walking target

[alex001x]

Hi
i have prometheus 2.51.0 and snmp_exporter 0.25.0,
in prometheus.yml
Params:
auth: [public_v3]
module: [pdu]
in snmp.yml
auths:
public_v3:
version: 3
username: 'test'
security_level: 'authPriv'
password: '1001DGdg'
auth_protocol: 'SHA'
priv_protocol; 'DES'
priv_password: '1002DGdg'
modules:
pdu:
walk:
- 1.3.6.1.4.1.2.6.223.8.3.2.1.4.1
metrics:
- name: phase1
oid: 1.3.6.1.4.1.2.6.223.8.3.2.1.4.1
type: integer

i have a error in snmp_exporter, i dont have metrics, error collecting metric Desc(fqName : "snmp_error", help: ....... error walking target 192.168.1.1
in terminal , snmpwalk to 192.168.1.1 is ok return value oid with snmp V3, but no in snmp_export
ufw allow 9116 and 161 and 9090
Please Help.
Alexandre.