I tried to send a request to my contract using ethersjs like this:

const web3Modal = new Web3Modal()
const connection = await web3Modal.connect()
const provider = new ethers.providers.Web3Provider(connection)
const signer = provider.getSigner()
const contract = new ethers.Contract(Contract, Market.abi, signer)
const price = ethers.utils.parseUnits(price.toString(), 18)

//const price = web3.utils.toWei(nft.price);
//const price = ethers.BigNumber.from(nft.price.toString()).toHexString();
   
const transaction = await contract.createSale(address, price)

await transaction.wait()

This code shows an error, I have tried all the solutions in this world, but nothing worked. => versions: nodejs 14.15, npm 8, web3 1.6, ethers 5.5

Any help?

Unhandled Rejection (Error): invalid BigNumber value (argument="value", value=undefined, code=INVALID_ARGUMENT, version=bignumber/5.5.0)

I tried to send a request to my contract using ethersjs like this:

const web3Modal = new Web3Modal()
const connection = await web3Modal.connect()
const provider = new ethers.providers.Web3Provider(connection)
const signer = provider.getSigner()
const contract = new ethers.Contract(Contract, Market.abi, signer)
const price = ethers.utils.parseUnits(price.toString(), 18)

//const price = web3.utils.toWei(nft.price);
//const price = ethers.BigNumber.from(nft.price.toString()).toHexString();
   
const transaction = await contract.createSale(address, price)

await transaction.wait()

This code shows an error, I have tried all the solutions in this world, but nothing worked. => versions: nodejs 14.15, npm 8, web3 1.6, ethers 5.5

Any help?

Unhandled Rejection (Error): invalid BigNumber value (argument="value", value=undefined, code=INVALID_ARGUMENT, version=bignumber/5.5.0)

• javascript
• web3js
• metamask
• ethers.js

Share Improve this question Follow edited Oct 3, 2022 at 19:45 TylerH 21.1k7979 gold badges7979 silver badges114114 bronze badges asked Nov 4, 2021 at 16:35 kkokko 4322 silver badges99 bronze badges

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2 Answers 2

Sorted by: Reset to default 2

When I connect to metamask in my frontend, the below error was happened.

invalid BigNumber string (argument="value", value="1.2e+21", code=INVALID_ARGUMENT, version=bignumber/5.5.0)

I have fixed it with bignumber in ethers. If you are using web3.js version : 1.5.1, please try it in this way. And also in other version you can try to use bignumber.js and web3.utils.toBn.

import { BigNumber} from 'ethers';

....

const decimals = 18;
const trans_amount = 1500;
const amount= BigNumber.from(trans_amount).mul(BigNumber.from(10).pow(decimals));

It looks like your price variable has the value undefined when you call createSale, resulting in an error.

Your issue is similar to: https://ethereum.stackexchange./questions/111042/cant-send-ether-to-smart-contract-using-ethers-js