missing argument: passed to contract - React, useDApp useContractFunction hook, Hardhat

Matthew Husák 0
Viewed 44

I'm trying to send a token transaction using a useDApp useContractFunction hook.

This is how I setup the hook.

const interface = new utils.Interface(tokenAbi.abi) // abi is located at tokenAbi.abi
const contract = new Contract(
 '0x5FbDB2315678afecb367f032d93F642f64180aa3',
  interface
) as any
const { state, send } = useContractFunction(contract, 'transfer')

and then, I'm calling the send function on a button click as follows

void (await send({
  recipient: '0x8626f6940E2eb28930eFb4CeF49B2d1F2C9C1199',
  amount: 1 * 1e18 // test amount
}))

calling this then resolves into a Exception with missing argument: passed to contract message.

The ABI definition for the transfer function is ⬇️

{
      "inputs": [
        {
          "internalType": "address",
          "name": "recipient",
          "type": "address"
        },
        {
          "internalType": "uint256",
          "name": "amount",
          "type": "uint256"
        }
      ],
      "name": "transfer",
      "outputs": [
        {
          "internalType": "bool",
          "name": "",
          "type": "bool"
        }
      ],
      "stateMutability": "nonpayable",
      "type": "function"
    },

Any ideas how to fix it?

Thanks!

usedapp ethereum erc20 hardhat blockchain
1 Answers

So, I've finally solved the issue.

Thanks DotNetRussell for bringing up thoughts about the passing array!

Solution is not to pass an object with keys (name) from ABI's function specification.

simply calling this ⬇️

void (await send('0x8626f6940E2eb28930eFb4CeF49B2d1F2C9C1199', 1 * 1e18)

works.

Matthew Husák0
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