USDT approve error

[sunnycn2013]

I want approve usdt to other adddess, I have deal amount like this, but it is error too..
please help me! thanks

`
let contractAddress ="0xdac17f958d2ee523a2206206994597c13d831ec7";
let acountNum = ethers.utils.parseUnits('1',6);

// 使用Provider 连接合约，将只有对合约的可读权限
let contract = new ethers.Contract(contractAddress, contracObj.contractAbi, this.provider);
//创建一个签名过的合约实例
let contractWithSigner = contract.connect(wallet);
await contractWithSigner.approve(toAcount, acountNum);
`

error:

body: "{"method":"eth_estimateGas","params":[{"gasPrice":"0x28fa6ae00","from":"0xeDc6B81DD981F912ff6C8Ec70603274913Dde36a","to":"0xdAC17F958D2ee523a2206206994597C13D831ec7","data":"0x095ea7b300000000000000000000000074622073a4821dbfd046e9aa2ccf691341a076e1000000000000000000000000000000000000000000000000000000000754d4c0"}],"id":50,"jsonrpc":"2.0"}" code: -32016 data: undefined responseText: "{"jsonrpc":"2.0","error":{"code":-32016,"message":"The execution failed due to an exception."},"id":50}↵" url: "http://47.91.28.165:8545/eth" message: "The execution failed due to an exception." stack: "Error: The execution failed due to an exception.↵ at v (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:141817:21)↵ at XMLHttpRequest.o.onreadystatechange (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:145548:23)↵ at XMLHttpRequest.dispatchEvent (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:28786:27)↵ at XMLHttpRequest.setReadyState (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:28524:14)↵ at XMLHttpRequest.__didCompleteResponse (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:28366:16)↵ at blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:28476:47↵ at RCTDeviceEventEmitter.emit (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:6129:37)↵ at MessageQueue.__callFunction (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:2587:44)↵ at blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:2344:17↵ at MessageQueue.__guard (blob:http://localhost:8081/ca8a38ea-6f36-460e-9dea-5b620cad2f69:2541:13)" __proto__: Object

[sunnycn2013]

@ricmoo

[ricmoo]

That error means that the nodes were unable to correctly estimate a gas limit, so you will need to specify it manually. It could be unable to estimate because the contract has complex external calls, or because the transaction will cause a revert. You can try:

let overrides = {
    gasLimit: 500000
};
await contractWithSigner.approve(toAcount, acountNum, overrides);

Let me know if you still have any problems.

[ricmoo]

I think that may have solved your issue, so I'm going to close this now. Please feel free to re-open if it did not though.

Thanks! :)

[Nuel-C]

I’m having issues approving usdt on my Metamask. The transaction keeps failing