# Truffle에서 contract배포 오류

**URL:** https://devforum.kaia.io/t/truffle-contract/4310
**Category:** Kaia
**Tags:** klaytn
**Created:** [3월 11, 2022, 4:06오전 UTC](https://devforum.kaia.io/t/truffle-contract/4310 "2022-03-11T04:06:28Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Eilys](https://yyz1.discourse-cdn.com/flex035/user_avatar/devforum.kaia.io/eilys/32/2039_2.png) [@Eilys](https://devforum.kaia.io/u/Eilys)
#### Post date: [3월 11, 2022, 4:06오전 UTC](https://devforum.kaia.io/t/truffle-contract/4310/1 "2022-03-11T04:06:28Z")

</div>

baobab에서 테스트 완료한뒤 kasCypress에 올리려니까  
When requesting the chain id from the node, itreturned the malformed result undefined.  
이런 오류가 뜨네요

kasCypress: {  
provider: () =\> {  
const option = {  
headers: [  
{  
name: “Authorization”,  
value:  
"Basic " +  
Buffer.from(accessKeyId + “:” + secretAccessKey).toString(  
“base64”  
),  
},  
{ name: “x-chain-id”, value: “8217” },  
],  
keepAlive: false,  
};  
return new HDWalletProvider(  
cypressPrivateKey,  
new Caver.providers.HttpProvider(  
“[https://node-api.klaytnapi.com/v1/klaytn](https://node-api.klaytnapi.com/v1/klaytn)”,  
option  
)  
);  
},  
network\_id: “8217”,  
gas: “8500000”,  
gasPrice: “25000000000”,  
},

cypressPrivateKey와 Basic 등 입력은 제대로 했고 kas 사용량 충분합니다 테스트넷에서는 되는데 상용에는 오류가 뜰까요

---

<div class="post-metadata">

### Author: ![KlayToTheMoon](https://yyz1.discourse-cdn.com/flex035/user_avatar/devforum.kaia.io/klaytothemoon/32/824_2.png) [@KlayToTheMoon](https://devforum.kaia.io/u/KlayToTheMoon)
#### Post date: [3월 30, 2022, 5:03오전 UTC](https://devforum.kaia.io/t/truffle-contract/4310/2 "2022-03-30T05:03:39Z")

</div>

truffle version 문제일 수도 있고  
kas 문제일 수도 있습니다.  
혹은 Provider 문제일 수도 있구요.  
우선 kas public node로 테스트를 한번 해보시겠어요?

```auto
cypress: {
            provider: () => {
                return new HDWalletProvider(privateKey, "https://public-node-api.klaytnapi.com/v1/cypress");
            },
            network_id: "8217", //Klaytn cypress mainnet's network id
            gas: "8500000", 
        },

```