ethers.js, Swap on uniswapV3 failed tx - solidity

Question

Im trying to use exactInput() function for UniV3 interface but when trying to execute the code the transactions fails https://goerli.etherscan.io/tx/0xb0d5e4b491610b9db8d98cc938008ba2a4e1a06e67b05ed87ac6c0ca3ad61dab
I know eth send shows 0 in this one but even especifying amount it fails, I dont know what to change..
I have checked many codes out there and cant see the mistake, please could someone give me some advice?
const {abi: V3SwapRouterABI} = require('#uniswap/v3-periphery/artifacts/contracts/interfaces/ISwapRouter.sol/ISwapRouter.json')
const { ethers } = require("ethers")
require("dotenv").config()
const INFURA_URL_TESTNET = process.env.INFURA_URL_TESTNET
const PRIVATE_KEY = process.env.PRIVATE_KEY
const WALLET_ADDRESS = process.env.WALLET_ADDRESS
// now you can call sendTransaction
const wethToken= "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6"
const Uni= "0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984"
const UniswapRouter="0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"
const UniV3Contract = new ethers.Contract(
UniswapRouter,
V3SwapRouterABI
)
const provider = new ethers.providers.JsonRpcProvider(INFURA_URL_TESTNET)
const wallet = new ethers.Wallet(PRIVATE_KEY)
const signer = wallet.connect(provider)
const FEE_SIZE = 3
function encodePath(path, fees) {
if (path.length != fees.length + 1) {
throw new Error('path/fee lengths do not match')
}
let encoded = '0x'
for (let i = 0; i < fees.length; i++) {
// 20 byte encoding of the address
encoded += path[i].slice(2)
// 3 byte encoding of the fee
encoded += fees[i].toString(16).padStart(2 * FEE_SIZE, '0')
}
// encode the final token
encoded += path[path.length - 1].slice(2)
return encoded.toLowerCase()
}
async function getToken() {
const path = encodePath([wethToken, Uni], [3000])
const deadline = Math.floor(Date.now()/1000) + (60*10)
const params = {
path: path,
recipient: WALLET_ADDRESS,
deadline: deadline,
amountIn: ethers.utils.parseEther('0.01'),
amountOutMinimum: 0
}
const encodedData = UniV3Contract.interface.encodeFunctionData("exactInput", [params])
const txArg = {
to: UniswapRouter,
from: WALLET_ADDRESS,
data: encodedData,
gasLimit: ethers.utils.hexlify(1000000)
}
const tx = await signer.sendTransaction(txArg)
console.log('tx: ', tx)
const receipt = tx.wait()
console.log('receipt: ', receipt)
}
module.exports = { getToken

Answer 1

You will need to remove the Deadline.. The new router 0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45 moved deadline to the multi-call function (since the router is designed to be multi-call)