I am getting started with Application development on Matic. And I am following the instruction as provided on the docs https://docs.matic.network/docs/develop/getting-started
But I faced problem while using truffle. After I run the command
truffle migrate --network matic
The error as follow:
Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.
Starting migrations...
======================
> Network name: 'matic'
> Network id: 80001
> Block gas limit: 20000000 (0x1312d00)
1_initial_migration.js
======================
Deploying 'Migrations'
----------------------
Error: *** Deployment Failed ***
"Migrations" -- insufficient funds for gas * price + value.
at /usr/local/lib/node_modules/truffle/build/webpack:/packages/deployer/src/deployment.js:365:1
at process._tickCallback (internal/process/next_tick.js:68:7)
Truffle v5.1.55 (core: 5.1.55)
Node v10.19.0
The configuration file of truffle as follow:
const HDWalletProvider = require('truffle-hdwallet-provider');
const fs = require('fs');
const mnemonic = fs.readFileSync(".secret").toString().trim();
module.exports = {
networks: {
development: {
host: "127.0.0.1", // Localhost (default: none)
port: 8545, // Standard Ethereum port (default: none)
network_id: "*", // Any network (default: none)
},
matic: {
provider: () => new HDWalletProvider(mnemonic, `https://rpc-mumbai.matic.today`),
network_id: 80001,
confirmations: 2,
timeoutBlocks: 200,
skipDryRun: true
},
},
// Set default mocha options here, use special reporters etc.
mocha: {
// timeout: 100000
},
// Configure your compilers
compilers: {
solc: {
}
}
}
It worked fine for the develop network using
truffle develop
Can someone tell me how to overcome error while using Matic Test Network?
Make sure you have enough MATIC for the transaction, you can get some from here and transfer them to the account[0]. I had issues deploying with truffle as all my tokens were at account[1] rather than account[0]
in my case it was ETH, ensuring i had tokens in the first account did the trick
Related
I want to connect to hyperledger fabric blockchain network on Amazon Managed Blockchain using nodejs sdk.
Fabric client is a cloud9 instance, which already setup and successfully connected to peer node using fabric cli inside a docker container.
But when I try to use nodejs sdk to connect to network with this code:
'use strict';
const FabricCAServices = require('fabric-ca-client');
const { Wallets, Gateway, X509Identity, User } = require('fabric-network');
const fs = require('fs');
const path = require('path');
const yaml = require('js-yaml');
const ccpPath = path.resolve(__dirname, 'connection_profile.yaml');
const ccp = yaml.load(fs.readFileSync(ccpPath, 'utf8'));
async function main() {
try {
const walletPath = path.join(process.cwd(), 'wallet');
const wallet = await Wallets.newFileSystemWallet(walletPath);
const gateway = new Gateway();
const gatewayOptions = {identity: 'admin', wallet: wallet, discovery: {enabled: true, asLocalhost: false }}
await gateway.connect(ccp, gatewayOptions);
const network = await gateway.getNetwork('mychannel');
} catch (error) {
console.error(`Some error is occurred: ${error.stack}`);
process.exit(1);
}
}
main();
With content of "connection_profile.yaml" file is:
name: "ABC"
x-type: hlfv1
version: "1.0"
channels:
mychannel:
orderers:
- ABCOrderer
peers:
peer1:
endorsingPeer: true
chaincodeQuery: true
ledgerQuery: true
eventSource: true
organizations:
abc:
mspid: m-***
peers:
- peer1
certificateAuthorities:
- abc
orderers:
ABCOrderer:
url: grpcs://orderer.n-***.managedblockchain.ap-northeast-1.amazonaws.com:30001
grpcOptions:
ssl-target-name-override: orderer.n-***.managedblockchain.ap-northeast-1.amazonaws.com
tlsCACerts:
# path: /home/ec2-user/managedblockchain-tls-chain.pem
path: /home/ec2-user/admin-msp/admincerts/cert.pem
peers:
peer1:
url: grpcs://nd-***.managedblockchain.ap-northeast-1.amazonaws.com:30003
eventUrl: grpcs://nd-***.managedblockchain.ap-northeast-1.amazonaws.com:30004
grpcOptions:
ssl-target-name-override: nd-***.managedblockchain.ap-northeast-1.amazonaws.com
tlsCACerts:
# path: /home/ec2-user/managedblockchain-tls-chain.pem
path: /home/ec2-user/admin-msp/admincerts/cert.pem
certificateAuthorities:
abc:
url: https://ca.m-***.managedblockchain.ap-northeast-1.amazonaws.com:30002
httpOptions:
verify: true
tlsCACerts:
# path: /home/ec2-user/managedblockchain-tls-chain.pem
path: /home/ec2-user/admin-msp/admincerts/cert.pem
caName: m-***
"/home/ec2-user/admin-msp/admincerts/cert.pem" is file is created by enroll member admin identity (follow this aws guide: https://docs.aws.amazon.com/managed-blockchain/latest/hyperledger-fabric-dev/get-started-enroll-admin.html).
Then after 3s the console show this error:
2022-07-05T13:22:52.812Z - error: [ServiceEndpoint]: Error: Failed to connect before the deadline on Endorser- name: peer1, url:grpcs://nd-***.managedblockchain.ap-northeast-1.amazonaws.com:30003, connected:false, connectAttempted:true
2022-07-05T13:22:52.814Z - error: [ServiceEndpoint]: waitForReady - Failed to connect to remote gRPC server peer1 url:grpcs://nd-***.managedblockchain.ap-northeast-1.amazonaws.com:30003 timeout:3000
2022-07-05T13:22:52.814Z - info: [NetworkConfig]: buildPeer - Unable to connect to the endorser peer1 due to Error: Failed to connect before the deadline on Endorser- name: peer1, url:grpcs://nd-***.managedblockchain.ap-northeast-1.amazonaws.com:30003, connected:false, connectAttempted:true
2022-07-05T13:22:55.817Z - error: [ServiceEndpoint]: Error: Failed to connect before the deadline on Committer- name: ABCOrderer, url:grpcs://orderer.n-***.managedblockchain.ap-northeast-1.amazonaws.com:30001, connected:false, connectAttempted:true
2022-07-05T13:22:55.817Z - error: [ServiceEndpoint]: waitForReady - Failed to connect to remote gRPC server ABCOrderer url:grpcs://orderer.n-***.managedblockchain.ap-northeast-1.amazonaws.com:30001 timeout:3000
2022-07-05T13:22:55.818Z - info: [NetworkConfig]: buildOrderer - Unable to connect to the committer ABCOrderer due to Error: Failed to connect before the deadline on Committer- name: ABCOrderer, url:grpcs://orderer.n-***.managedblockchain.ap-northeast-1.amazonaws.com:30001, connected:false, connectAttempted:true
Some error is occurred: TypeError: Cannot read property 'toArray' of null
at EC.sign (/home/ec2-user/src-test/node_modules/elliptic/lib/elliptic/ec/index.js:104:30)
at CryptoSuite_ECDSA_AES.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/impl/CryptoSuite_ECDSA_AES.js:215:25)
at Signer.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/Signer.js:59:28)
at SigningIdentity.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/SigningIdentity.js:71:23)
at IdentityContext.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/IdentityContext.js:91:40)
at DiscoveryService.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/ServiceAction.js:69:40)
at NetworkImpl._initializeInternalChannel (/home/ec2-user/src-test/node_modules/fabric-network/lib/network.js:298:35)
at NetworkImpl._initialize (/home/ec2-user/src-test/node_modules/fabric-network/lib/network.js:250:20)
at Gateway.getNetwork (/home/ec2-user/src-test/node_modules/fabric-network/lib/gateway.js:350:26)
at main (/home/ec2-user/src-test/enrollUser.js:38:35)
So I think the problem probably is my connection_profile setting, which I mimic connection-profile-template.yaml file from aws blockchain samples code (https://github.com/aws-samples/non-profit-blockchain/tree/master/ngo-lambda).
# Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# or in the "license" file accompanying this file. This file is distributed
# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
# express or implied. See the License for the specific language governing
# permissions and limitations under the License.
name: "ngo"
x-type: "hlfv1"
description: "NGO Network"
version: "1.0"
channels:
mychannel:
orderers:
- orderer.com
peers:
peer1:
endorsingPeer: true
chaincodeQuery: true
ledgerQuery: true
eventSource: true
organizations:
Org1:
mspid: %MEMBERID%
peers:
- peer1
certificateAuthorities:
- ca-org1
orderers:
orderer.com:
url: grpcs://%ORDERINGSERVICEENDPOINT%
grpcOptions:
ssl-target-name-override: %ORDERINGSERVICEENDPOINTNOPORT%
tlsCACerts:
path: %CAFILE%
peers:
peer1:
url: grpcs://%PEERSERVICEENDPOINT%
eventUrl: grpcs://%PEEREVENTENDPOINT%
grpcOptions:
ssl-target-name-override: %PEERSERVICEENDPOINTNOPORT%
tlsCACerts:
path: %CAFILE%
certificateAuthorities:
ca-org1:
url: https://%CASERVICEENDPOINT%
httpOptions:
verify: false
tlsCACerts:
path: %CAFILE%
caName: %MEMBERID%
So, any idea or suggestion on how can I fix it? Any help would be appreciated.
Thank You!
Updated_1:
I try both key file from AWS S3(managedblockchain-tls-chain.pem) and key created by CA for admin. But both do not seem to work. Here is the error when I try with key file from S3:
Some error is occurred: TypeError: Cannot read property 'toArray' of null
at EC.sign (/home/ec2-user/src-test/node_modules/elliptic/lib/elliptic/ec/index.js:104:30)
at CryptoSuite_ECDSA_AES.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/impl/CryptoSuite_ECDSA_AES.js:215:25)
at Signer.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/Signer.js:59:28)
at SigningIdentity.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/SigningIdentity.js:71:23)
at IdentityContext.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/IdentityContext.js:91:40)
at DiscoveryService.sign (/home/ec2-user/src-test/node_modules/fabric-common/lib/ServiceAction.js:69:40)
at NetworkImpl._initializeInternalChannel (/home/ec2-user/src-test/node_modules/fabric-network/lib/network.js:298:35)
at NetworkImpl._initialize (/home/ec2-user/src-test/node_modules/fabric-network/lib/network.js:250:20)
at Gateway.getNetwork (/home/ec2-user/src-test/node_modules/fabric-network/lib/gateway.js:350:26)
at main (/home/ec2-user/src-test/enrollUser.js:38:35)
Updated 2:
Maybe the problem is my admin identity inside wallet, so I update the code to save admin identity to the wallet:
const caURL = ccp.certificateAuthorities['abc'].url;
const ca = new FabricCAServices(caURL);
const enrollment = await ca.enroll({ enrollmentID: 'admin', enrollmentSecret: 'Adminpassword' });
const X509Identity = {
credentials: {
certificate: enrollment.certificate,
privateKey: enrollment.rootCertificate,
},
mspId: ccp.organizations['abc'].mspid,
type: 'X.509',
};
// Create a new file system based wallet for managing identities.
const walletPath = path.join(process.cwd(), 'wallet');
const wallet = await Wallets.newFileSystemWallet(walletPath);
await wallet.put('admin', X509Identity);
Updated_3:
As #david_k suggests, the problem is my identity inside the wallet is wrong, and as the result, it is denied by the gateway. So the line privateKey in Update_2 needs to be changed from privateKey: enrollment.rootCertificate, to privateKey: enrollment.key.toBytes(),
Thank you very much #david_k!
I'm new to blockchain and i was just trying to deploy a simple smart contract to ropsten test net. I've used the smart contract code from https://github.com/t4sk/solidity-multi-sig-wallet. Also i'm using the account provided by truffle develop
My truffle-config.js:
networks: {
development: {
host: "127.0.0.1", // Localhost (default: none)
port: 8545, // Standard Ethereum port (default: none)
network_id: "*", // Any network (default: none)
},
ropsten: {
provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/${infuraKey}`),
network_id: 3, // Ropsten's id
gas: 5500000, // Ropsten has a lower block limit than mainnet
confirmations: 2, // # of confs to wait between deployments. (default: 0)
timeoutBlocks: 200, // # of blocks before a deployment times out (minimum/default: 50)
skipDryRun: true // Skip dry run before migrations? (default: false for public nets )
},
mocha: {
timeout: 100000
},
compilers: {
solc: {
version: "0.5.1", // Fetch exact version from solc-bin (default: truffle's version)
// docker: true, // Use "0.5.1" you've installed locally with docker (default: false)
// settings: { // See the solidity docs for advice about optimization and evmVersion
optimizer: {
enabled: false,
runs: 200
},
// evmVersion: "byzantium"
// }
}
},
Im using solidity: 0.5.1
But when i try to deploy it using truffle migrate --network ropsten im getting the following two errors
1.
This version of µWS is not compatible with your Node.js build:
Error: Cannot find module './uws_win32_x64_72.node'
Falling back to a NodeJS implementation; performance may be degraded.
1_initial_migration.js
======================
Deploying 'Migrations'
----------------------
> transaction hash: 0x673a9a02662595075c6f3aa4dc904d24203cb8e460a3e20a630869c5155cb78c
> Blocks: 2 Seconds: 53
> contract address: 0xde674E126884c8F7Ddd94B5013065596b81fEd6d
> block number: 12075322
> block timestamp: 1647065140
> account: 0xC10352218af6Ccbb574Fd0912adcc9Ac59C22950
> balance: 1.830076836873988898
> gas used: 175087 (0x2abef)
> gas price: 2.500000028 gwei
> value sent: 0 ETH
> total cost: 0.000437717504902436 ETH
Pausing for 2 confirmations...
-------------------------------
C:\Users\coolg\Desktop\hd_wallet\node_modules\request\request.js:848
var e = new Error('ETIMEDOUT')
^
Error: PollingBlockTracker - encountered an error while attempting to update latest block:
Error: ETIMEDOUT
at Timeout.<anonymous> (C:\Users\coolg\Desktop\hd_wallet\node_modules\request\request.js:848:19)
at listOnTimeout (internal/timers.js:549:17)
at processTimers (internal/timers.js:492:7)
at PollingBlockTracker._performSync (C:\Users\coolg\Desktop\hd_wallet\node_modules\eth-block-tracker\src\polling.js:51:24)
at runMicrotasks (<anonymous>)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
Also a transaction for the above smart contract address 0xde674E126884c8F7Ddd94B5013065596b81fEd6d is created on ropsten network.
Edit 1:
I've replaced the provider link with wss://ropsten.infura.io/v3/${infuraKey}` and the 2nd issue gets resolved but now it shows another error
1_initial_migration.js
======================
Deploying 'Migrations'
----------------------
> transaction hash: 0xb72aef24e5fc16395f1dc221965c4e2036b4d72babbe829f244f958d302baee5
> Blocks: 7 Seconds: 228
> contract address: 0xb81478b107D5B08B0F9ce8d0E404701a3D2292a0
> block number: 12076445
> block timestamp: 1647090364
> account: 0xC10352218af6Ccbb574Fd0912adcc9Ac59C22950
> balance: 1.828763684345799891
> gas used: 175087 (0x2abef)
> gas price: 2.500000007 gwei
> value sent: 0 ETH
> total cost: 0.000437717501225609 ETH
Pausing for 2 confirmations...
-------------------------------
> confirmation number: 3 (block: 12076452)
⠦ Saving migration to chain.
Exiting: Review successful transactions manually by checking the transaction hashes above on Etherscan.
Error: Transaction was not mined within 750 seconds, please make sure your transaction was properly sent. Be aware that it might still be mined!
It says the transaction might still be mined, so how will i know when my transaction gets mined? Also in the meantime can i call the fuctions/events of my smart contract that is deployed on the ropsten_eth https://ropsten.etherscan.io/address/0xb81478b107d5b08b0f9ce8d0e404701a3d2292a0
The problem here by mistake may be the address you are trying to reach. I searched for what the problem might be and found two threads where people have already described the problem and sort of found a solution. Most likely one of these options should help to solve the problem.
The first solution is here. The idea is to replace https with wss. There should be something like this:
testnet: {
provider: () => new HDWalletProvider(mnemonic, `wss://ropsten.infura.io/v3/${infuraKey}`),
...
}
Then I searched some more and found something like this. The author of the post says that the problem could be due to DNS or slow internet and suggests adding two parameters to the config:
testnet: {
...,
networkCheckTimeout: 10000,
timeoutBlocks: 200
}
I am trying to connect to AWS DocumentDB with Node.js/Typescript and Mongoose. I have an EC2 instance setup as SSL tunnel, which works great. I can connect to DocumentDB locally with Studio3T and mongo-cli.
This command works mongo --sslAllowInvalidHostnames --ssl --sslCAFile rds-combined-ca-bundle.pem --username <username> --password <password>
But if I try to connect to the same database with Mongoose, it fails. This is my code and the error:
const options = {
dbName: "prodDB",
user: connectionData.username,
pass: connectionData.password,
tls: true,
tlsCAFile: "../rds-combined-ca-bundle.pem",
tlsAllowInvalidHostNames: true,
};
try {
await connect("mongodb://localhost:27017", options);
} catch (error) {
console.log(error);
}
MongooseServerSelectionError: connect EHOSTUNREACH imagine-ip-address-here:27017
reason: TopologyDescription {
type: 'ReplicaSetNoPrimary',
servers: Map(1) {
'censored:27017' => [ServerDescription]
},
stale: false,
compatible: true,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
setName: 'rs0',
commonWireVersion: 7,
logicalSessionTimeoutMinutes: undefined
}
At this point, I have tried pretty much any possible config in Mongoose and I am getting desperate. Any help is appreciated
This seems to be an issue with mongoose versions >= 6.
Downgrading Mongoose to version 5.13.8 works without a problem.
Mongoose devs are apparently aware of this issue: https://github.com/Automattic/mongoose/issues/11105
I launched a private network by using geth --datadir data/node1 --http --dev --http.corsdomain "*" --http.api web3,eth,debug,personal,net,miner --allow-insecure-unlock --mine command.
I am able to attach to it geth attach http://localhost:8545
but the balance of the default account is only 1.15 ether:
eth.getBalance(eth.accounts[0]) 1.15792089237316195423570985008687907853269984665640564039457582226449518702905e+77
I'd like to give it more ethers so I run:
miner.start()
null
And I can see there is a warn in the node log:
INFO [11-28|20:29:38.512] Transaction pool price threshold updated price=1
INFO [11-28|20:29:38.512] Commit new mining work number=4 sealhash=73b6e7..5d8b72 uncles=0 txs=0 gas=0 fees=0 elapsed="174.436µs"
WARN [11-28|20:29:38.512] Block sealing failed err="sealing paused while waiting for transactions"
I wonder what the issue could be?
Perhaps you have not previously given permission for the miner to sign the genesis block.
POA uses the Clique API to manage the seal list.
> clique.proposals
{}
> clique.propose("0xc077f8420d5b6c125897d9c5e21293ff6f77855c", true)
true
> clique.proposals
{
0xc077f8420d5b6c125897d9c5e21293ff6f77855c: true
}
> clique.getSnapshot()
{
hash: "0xfbfe67cd638d21f528036130cc703be8f8fdccb934d871f3f8c2eccda1ed4bf5",
number: 11,
recents: {
10: "0xc077f8420d5b6c125897d9c5e21293ff6f77855c",
11: "0x726794b16f6c5b0be0b78d7713a876ed3da8be1a"
},
signers: {
0x726794b16f6c5b0be0b78d7713a876ed3da8be1a: {},
0xc077f8420d5b6c125897d9c5e21293ff6f77855c: {}
},
tally: {},
votes: []
}`enter code here`
enter code here
You can see more details in this manual: https://yenhuang.gitbooks.io/blockchain/content/interact-with-private-chain-on-android/build-the-private-chain.html
You can also top up your balance using:
eth.sendTransaction({from:eth.coinbase, to:eth.accounts[1], value: web3.toWei(0.05, "ether")})
but the balance of the default account is only 1.15 ether:
eth.getBalance(eth.accounts[0])
1.15792089237316195423570985008687907853269984665640564039457582226449518702905e+77
I didn’t pay attention to it right away. But this is not 1.15 ETH, this is a huge number of ETH that will not end and you can transfer it from coinbase to other created accounts on your private network in dev mode.
I am trying to deploy a Smart Contract with truffle 5.1.19 as follows:
pragma solidity 0.5.16;
contract Simple {
string public message;
function Hello(string memory _initialMessage) public {
message = _initialMessage;
}
function setMessage(string memory _newMessage) public {
message = _newMessage;
}
}
When I run a truffle deploy --network mired I have the next error:
Error: Number can only safely store up to 53 bits
at assert (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/bn.js/lib/bn.js:6:1)
at BN.toNumber (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/bn.js/lib/bn.js:506:1)
at Object.hexToNumber (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/web3-utils/src/utils.js:234:1)
at Method.outputBlockFormatter (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/web3-core-helpers/src/formatters.js:236:1)
at Method.web3.eth.getBlock.method.outputFormatter (/usr/local/lib/node_modules/truffle/build/webpack:/packages/interface-adapter/dist/shim/overloads/ethereum.js:37:1)
at Method.formatOutput (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/web3-core-method/src/index.js:163:1)
at sendTxCallback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/web3-core-method/src/index.js:473:1)
at /usr/local/lib/node_modules/truffle/build/webpack:/node_modules/web3-core-requestmanager/src/index.js:147:1
at /usr/local/lib/node_modules/truffle/build/webpack:/packages/provider/wrapper.js:112:1
at XMLHttpRequest.request.onreadystatechange (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/web3-providers-http/src/index.js:96:1)
at XMLHttpRequestEventTarget.dispatchEvent (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/xhr2-cookies/dist/xml-http-request-event-target.js:34:1)
at XMLHttpRequest._setReadyState (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/xhr2-cookies/dist/xml-http-request.js:208:1)
at XMLHttpRequest._onHttpResponseEnd (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/xhr2-cookies/dist/xml-http-request.js:318:1)
at IncomingMessage.<anonymous> (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/xhr2-cookies/dist/xml-http-request.js:289:47)
at IncomingMessage.emit (events.js:203:15)
at endReadableNT (_stream_readable.js:1145:12)
at process._tickCallback (internal/process/next_tick.js:63:19)
Truffle v5.1.19 (core: 5.1.19)
Node v10.19.0
My truffle-config for my network is the next one:
mired: {
host: "10.xxx.xxx.xxx",
port: 8080, // Custom port
network_id: "*", // Custom network
gas: 0, // Gas sent with each transaction (default: ~6700000)
gasPrice: 0x0, // 20 gwei (in wei) (default: 100 gwei)
from: "0x8...............", // Account to send txs from (default: accounts[0])
// websockets: true // Enable EventEmitter interface for web3 (default: false)
},
Doing a downgrade of my truffle to the 4.1.15 version this error dissapears but I don't understand why with an actual version, this error appears. Thanks in advance
If you are working with quorum like it is my case. On truffle-config.js, you have to write type:"quorum" and it solves the problem.