Uniswap V3 AlphaRouter - "Failed to get subgraph pools from any providers" - node.js

Question

I am trying to swap WETH against MyToken from a previously created Uniswap V3 pool on Arbitrum Rinkeby. When calling AlphaRouter.route, however, I get the following error message
Failed to get subgraph pools from any providers
What is still missing to swap?
What do I need to create?
My target is to swap WETH for a given output of MyToken.
I am trying to simply get a swap on Uniswap V3 with my pool done. Any ideas?
const Web3 = require('web3');
const {
ethers
} = require("ethers");
const HDWalletProvider = require('#truffle/hdwallet-provider');
const {
Token,
CurrencyAmount,
TradeType,
Percent
} = require("#uniswap/sdk-core");
const {
AlphaRouter
} = require('#uniswap/smart-order-router');
const ABI_UNISWAP_POOL_V3 = require("#uniswap/v3-core/artifacts/contracts/interfaces/IUniswapV3Pool.sol/IUniswapV3Pool.json");
const fs = require('fs');
const JSBI = require('JSBI');
const API_ALCHEMY_ARBITRUM_RINKEBY = 'https://arb-rinkeby.g.alchemy.com/v2/<API KEY>';
const POOL_ADDRESS_MYTOKEN_WETH = '0xc69e7AE1073DD8184FcF6dBfc27ba97d1524716A';
const mnemonic = fs.readFileSync("./.mnemonics").toString().trim();
const hdprovider = new HDWalletProvider(mnemonic, API_ALCHEMY_ARBITRUM_RINKEBY);
const provider = new ethers.providers.Web3Provider(hdprovider);
const owner = hdprovider.addresses[0];
var web3 = new Web3(hdprovider);
const Contract = web3.eth.Contract;
const router = new AlphaRouter({
chainId: 421611,
provider: provider
});
async function main() {
const MyPool = new Contract(ABI_UNISWAP_POOL_V3.abi, POOL_ADDRESS_MYTOKEN_WETH);
const [factory, token0, token1, fee, tickSpacing, liquidity, maxLiquidityPerTick] =
await Promise.all([MyPool.methods.factory().call(),
MyPool.methods.token0().call(),
MyPool.methods.token1().call(),
MyPool.methods.fee().call(),
MyPool.methods.tickSpacing().call(),
MyPool.methods.liquidity().call(),
MyPool.methods.maxLiquidityPerTick().call()
]);
const tokenA = new Token(3, token0, 2, "MTK", "MyToken");
const tokenB = new Token(3, token1, 18, "WETH", "Wrapped Ether");
var amountOut = 2000;
amountOut = CurrencyAmount.fromRawAmount(tokenA, JSBI.BigInt(amountOut.toString()));
const slippageTolerance = new Percent(5, 100);
const deadline = Date.now() + 15000;
const route = await router.route(
amountOut,
tokenB,
TradeType.EXACT_OUTPUT, {
recipient: owner,
slippageTolerance: slippageTolerance,
deadline: deadline
}
);
hdprovider.engine.stop();
}
main();

Answer 1

I see two things are not right in this code:
First is the amountOut that you are passing to router.route should be converted to wei
const amountOutInWei=ethers.utils.parseUnits(amountOut.toString(),decimals)
// amountOutInWei should be converted to currentAmount
const currencyAmount= CurrencyAmount.fromRawAmount(tokenA,JSBI.BigInt(amountOutInWei))
currencyAmount should be passed to the router.route(currencyAmount,..)
Second issue deadline must be in seconds.
const deadline=Math.floor(Date.now() / 1000)+10*60 // addded 10 minutes