Help:how to use MIB brower 4.9 connect snmpv3 user?

Hi, everyone,

     Now I create a snmpv3 user in linux, and realize the set, get,
walk operations
using command lines.
     And I try to use MIB brower 4.9, but it show as follows:
     can you help me? I appreciate it.

Request:
User profile name: profile01
Security user name: pool
Security engine ID: (zero-length)
Context name: poolrw
Context engine ID: (zero-length)
Authentication protocol: HMAC SHA
Privacy protocol: CFB AES 128
Security level: Authentication And Privacy
Security model: USM
Operation: Get next
1: sysUpTime (null) null

Synchronize:
SNMPv3 report received from remote agent.
Security engine ID updated.
User profile name: profile01
Security user name: pool
Security engine ID: 80.00.1F.88.80.4E.C5.FD.5B.BC.75.87.4F (hex)
Context name: poolrw
Context engine ID: 80.00.1F.88.80.4E.C5.FD.5B.BC.75.87.4F (hex)
Authentication protocol: HMAC SHA
Privacy protocol: CFB AES 128
Security level: Authentication And Privacy
Security model: USM
1: usmStatsUnknownEngineIDs.0 (counter) 9

Synchronize:
SNMPv3 report received from remote agent.
Time updated.
User profile name: profile01
Security user name: pool
Security engine ID: 80.00.1F.88.80.4E.C5.FD.5B.BC.75.87.4F (hex)
Context name: poolrw
Context engine ID: 80.00.1F.88.80.4E.C5.FD.5B.BC.75.87.4F (hex)
Authentication protocol: HMAC SHA
Privacy protocol: CFB AES 128
Security level: Authentication And Privacy
Security model: USM
1: usmStatsNotInTimeWindows.0 (counter) 1
TIMEOUT

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