Hyperledger fabric - No response when using sendTransactionProposal() API - node.js

Question

This is a tracing network with one channel composed of 3 Orgs, 1 anchor peer per organization, 1 MSP per org, and 1 CA for org3. And I'm not using TLS (because I couldn't find a dependable sample with TLS ON)
I'm trying to use Fabric-sdk-node to build a web front end for it, and I'm using fabcar sample. and when I use invoke.js (almost the same as the example), I find there is no reponse.
Store path:/root/hyperledger-fabric/test/webapp/hfc-key-store
Successfully loaded user1 from persistence
Assigning transaction_id: 8387c087b4b7b9210cdc68ff0ff7fda99c706bad052b9b5138c86df5463244be
Transaction proposal was bad
proposalResponses[0].response is bad
undefined
Failed to send Proposal or receive valid response. Response null or status is not 200. exiting...
Failed to invoke successfully :: Error: Failed to send Proposal or receive valid response. Response null or status is not 200. exiting...
and the code is
if (proposalResponses && proposalResponses[0].response && proposalResponses[0].response.status === 200) {
isProposalGood = true;
console.log('Transaction proposal was good');
} else {
console.error('Transaction proposal was bad');
if (!proposalResponses) {
console.log('proposalResponses is bad');
}
if (!proposalResponses[0].response) {
console.log('proposalResponses[0].response is bad');
//console.log(proposalResponses[0].response.status);
}
}
When I check the the docker logs(in ca, peer0, orderer ), I find the only thing changed in orderer.trace.com
2021-05-04 07:41:41.136 UTC [comm.grpc.server] 1 -> INFO 007 streaming call completed {"grpc.start_time": "2021-05-04T07:40:41.77Z", "grpc.service": "orderer.AtomicBroadcast", "grpc.method": "Deliver", "grpc.peer_address": "172.21.0.8:39422", "error": "context finished before block retrieved: context canceled", "grpc.code": "Unknown", "grpc.call_duration": "59.36575566s"}
After several attempts, this error occurred on one occasion in peer0.sell.trace.com
2021-05-04 01:44:31.199 UTC [ConnProducer] NewConnection -> ERRO 034 Failed connecting to orderer.trace.com:7050 , error: context deadline exceeded
2021-05-04 01:44:31.200 UTC [deliveryClient] connect -> ERRO 035 Failed obtaining connection: Could not connect to any of the endpoints: [orderer.trace.com:7050]
2021-05-04 01:44:31.200 UTC [deliveryClient] try -> WARN 036 Got error: Could not connect to any of the endpoints: [orderer.trace.com:7050] , at 1 attempt. Retrying in 1s
I'm a very newbie in both fabric and nodejs, so any kind of help would be great. Thanks in advance.
NEW EDIT
My peer yaml
peer0.sell.trace.com:
container_name: peer0.sell.trace.com
image: hyperledger/fabric-peer:latest
environment:
- CORE_PEER_ID=peer0.sell.trace.com
- CORE_PEER_ADDRESS=peer0.sell.trace.com:7051
- CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer0.sell.trace.com:7051
- CORE_PEER_GOSSIP_BOOTSTRAP=peer1.sell.trace.com:7051
- CORE_PEER_LOCALMSPID=OrgSellMSP
- CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock
- CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=test_default
- FABRIC_LOGGING_SPEC=INFO
#- FABRIC_LOGGING_SPEC=DEBUG
- CORE_PEER_GOSSIP_USELEADERELECTION=true
- CORE_PEER_GOSSIP_ORGLEADER=false
- CORE_PEER_PROFILE_ENABLED=true
##TLS
#- CORE_PEER_TLS_ENABLED=true
#- CORE_PEER_TLS_CERT_FILE=/etc/hyperledger/fabric/tls/server.crt
#- CORE_PEER_TLS_KEY_FILE=/etc/hyperledger/fabric/tls/server.key
#- CORE_PEER_TLS_ROOTCERT_FILE=/etc/hyperledger/fabric/tls/ca.crt
- GODEBUG=netdns=go
working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer
command: peer node start
volumes:
- /var/run/:/host/var/run/
- ./crypto-config/peerOrganizations/sell.trace.com/peers/peer0.sell.trace.com/msp:/etc/hyperledger/fabric/msp
- ./crypto-config/peerOrganizations/sell.trace.com/peers/peer0.sell.trace.com/tls:/etc/hyperledger/fabric/tls
#- ./crypto-config/peerOrganizations/sell.trace.com/users/Admin#sell.trace.com/tls:/etc/hyperledger/client/tls
ports:
- 1151:7051
- 1153:7053
networks:
default:
aliases:
- test
my connection.json
{
"name": "first-network-org_sell",
"version": "1.0.0",
"client": {
"organization": "org_sell",
"connection": {
"timeout": {
"peer": {
"endorser": "3000"
}
}
}
},
"organizations": {
"org_sell": {
"mspid": "OrgSellMSP",
"peers": [
"peer0.sell.trace.com",
"peer1.sell.trace.com"
]
}
},
"peers": {
"peer0.sell.trace.com": {
"url": "grpc://localhost:7051",
},
"peer1.sell.trace.com": {
"url": "grpc://localhost:7051",
}
}
}