En 노드에서 동기화 오류 문제

안녕하세요 현재 EN노드를 동기화 중인데 오류로 인해 문의드립니다.
version : 1.8.2

kend.conf

NETWORK="baobab"
SC_MAIN_BRIDGE=1
DATA_DIR=~/kend_home

log

INFO[04/14,17:12:32 +09] [31] Enabling metrics collection              
INFO[04/14,17:12:32 +09] [31] Enabling Prometheus Exporter             
INFO[04/14,17:12:32 +09] [18] Setting connection type                   nodetype=en conntype=1
INFO[04/14,17:12:32 +09] [18] Baobab bootnodes are set                 
DEBUG[04/14,17:12:32 +09] [31] Failed to read disk metrics               err="Not implemented"
INFO[04/14,17:12:32 +09] [18] Bootnode - Add Seed                       Node="kni://779d766628247ebda5f3e108e9303bd8efdb8eba9fd8d6c529e2614aec7207ebf6614fe7e61d0d99b75e8b23dd3a679b112fd0de7e4e71a7008f0718710da48f@52.79.223.199:32323?ntype=bn"
INFO[04/14,17:12:32 +09] [18] Setting MaxPhysicalConnections            MaxPhysicalConnections=10
INFO[04/14,17:12:32 +09] [18] Baobab network ID is set                  networkid=1001
DEBUG[04/14,17:12:32 +09] [2] FS scan times                             list=220.399µs set=4.881µs diff=7.325µs
INFO[04/14,17:12:32 +09] [18] Raised fd limit to process's maximum value  fd=10240
INFO[04/14,17:12:32 +09] [18] Baobab network ID is set                  networkid=1001
INFO[04/14,17:12:32 +09] [18] Archiving mode of this node               isArchiveMode=false
DEBUG[04/14,17:12:32 +09] [18] Memory settings                           PhysicalMemory(GB)=16
DEBUG[04/14,17:12:32 +09] [18] TxResend config                           Interval=4 TxResendCount=1000 UseLegacy=false
TRACE[04/14,17:12:32 +09] [2] Started watching keystore folder          path=/Users/ijiyeong/kend_home/keystore
INFO[04/14,17:12:32 +09] [40] Starting peer-to-peer node                instance=Klaytn/v1.8.2+7584e71de6/darwin-amd64/go1.15.7
INFO[04/14,17:12:32 +09] [47] Non-single database is used for persistent storage  DBType=LevelDB

...
INFO[04/14,17:12:33 +09] [30] Successfully loaded governance state from database  blockNumber=88351744
INFO[04/14,17:12:33 +09] [41] Initialised chain configuration           config="{ChainID: 1001 IstanbulCompatibleBlock: 75373312 LondonCompatibleBlock: 80295291 EthTxTypeCompatibleBlock: 86513895 SubGroupSize: 22 UnitPrice: 750000000000 DeriveShaImpl: 2 Engine: istanbul}"
INFO[04/14,17:12:33 +09] [41] Initialising Klaytn protocol              versions=[64] network=1001
INFO[04/14,17:12:33 +09] [5] Using DeriveShaConcat!                   
INFO[04/14,17:12:33 +09] [48] Initializing local trie node cache (fastCache)  MaxMiB=1024 FilePath=/Users/ijiyeong/kend_home/fastcache
INFO[04/14,17:12:33 +09] [48] Initialized local trie node cache (fastCache)  LoadedMiB=0 LoadedEntries=0 elapsed=563.329µs
INFO[04/14,17:12:33 +09] [5] Loaded most recent local header           number=88351982 hash=e998b7…7f386c td=88351983 age=23m11s522ms
INFO[04/14,17:12:33 +09] [5] Loaded most recent local full block       number=88351982 hash=e998b7…7f386c td=88351983 age=23m11s522ms
INFO[04/14,17:12:33 +09] [5] Loaded most recent local fast block       number=88351982 hash=e998b7…7f386c td=88351983 age=23m11s522ms
INFO[04/14,17:12:33 +09] [5] prefetchTxWorkers are started             num=32
DEBUG[04/14,17:12:33 +09] [5] Reinjecting stale transactions            count=0
INFO[04/14,17:12:33 +09] [5] Loaded local transaction journal          transactions=0 dropped=0
INFO[04/14,17:12:33 +09] [5] Regenerated local transaction journal     transactions=0 accounts=0
DEBUG[04/14,17:12:33 +09] [41] txResendloop started                      period=4.000

...
INFO[04/14,17:12:34 +09] [40] Starting P2P networking                  
DEBUG[04/14,17:12:36 +09] [35] Couldn't add port mapping                 protobuf=udp extport=32323 intport=32323 interface="UPnP or NAT-PMP" err="no UPnP or NAT-PMP router discovered"
DEBUG[04/14,17:12:36 +09] [34] Found seed node in database               Discover=Table id=10113aad83b7529e addr=13.36.185.241:32323 age=23m53.262398s
TRACE[04/14,17:12:36 +09] [34] add(node)                                 Discover=Table NodeType=3 node="kni://10113aad83b7529e72783afe3e71034e82aa9f8e730e3f06717b8982d9800097542b3242bca076d16ef2ab84417f2e695f5c91bf6b7a40f752e5cb404a7f9ca4@13.36.185.241:32323?ntype=en" sha=000000…000000
TRACE[04/14,17:12:36 +09] [34] Add(New)                                  Discover=Kademlia StorageName=EN node="kni://10113aad83b7529e72783afe3e71034e82aa9f8e730e3f06717b8982d9800097542b3242bca076d16ef2ab84417f2e695f5c91bf6b7a40f752e5cb404a7f9ca4@13.36.185.241:32323?ntype=en"
DEBUG[04/14,17:12:36 +09] [34

...
TRACE[04/14,17:12:36 +09] [34] << NEIGHBORS/v4                           addr=52.79.223.199:32323   err=nil
TRACE[04/14,17:12:36 +09] [34] [udp] handlePacket                        name=NEIGHBORS/v4 packet="&{TargetType:3 Nodes:[{IP:15.164.21.199 UDP:32323 TCP:32323 ID:e7945aca44f8d57e8484bd343a3ffa1aa5efe76bdcf88a83ebb4e35de931433c2463186cd98414616967089654b1987f0c855dad9adf8671e3e60f12551572d2 NType:3} {IP:3.38.240.30 UDP:60861 TCP:32323 ID:221f8d76cf48de5b4415556b5843b3baa65a88183bac41945624cd15aed21ab686aacf202a861f8e9ca44c92368eb7f99353390c82810a89c660f69ef61169d2 NType:3} {IP:106.243.97.163 UDP:32323 TCP:32323 ID:db988fc130c1cc2dcdd1ae8ed0b3fde3ef22fd807ea112f28450a4e8eefeedd8629445414f3413f8dc3475b4081a7b0c26d692b3d157d5eb95e68bd28ec2e684 NType:3} {IP:3.36.221.246 UDP:46891 TCP:32323 ID:103472970a7b14e6c42dcc609672b714f358120d2d9cf0bb508bc8a695bfcaeb8a873a8e9b859ab8a39e58bc88d66940b95389ccc541919e72284d5f48c9e948 NType:3}] Expiration:1649923981 Rest:[]}"
TRACE[04/14,17:12:36 +09] [34] Bond                                      Discover=Table    error="RPC timeout"
TRACE[04/14,17:12:36 +09] [34] Bond                                      Discover=Table    error="RPC timeout"

로그상 가장 큰 문제는 “protobuf=udp extport=32323 intport=32323 interface=“UPnP or NAT-PMP” err=“no UPnP or NAT-PMP router discovered”” 이부분인거 같아 방화벽을 확인해봤지만 현재 방화벽은 꺼져있어 모든 연결이 허용되는 상태입니다.

또한 klay.syncing의 결과값은 0이 나옵니다

ken attach ~/kend_home/klay.ipc
>> klay.syncing
0

반면에 klay.blockNumber의 결과값은 klaytn scope의 block height와 같습니다

~/kend_home 안에 "main-bridges.json"도 추가해봤지만 문제는 여전합니다.
해결할 수 있는 방법이 있을까요?