RPC Error: err: max fee per gas less than block base fee

[aghering23]

I'm trying to execute a quite heavy function with ethers.js and i get the following error: ''RPC Error: err: max fee per gas less than block base fee: address 0x8E...d27, maxFeePerGas: 29500969 baseFee: 377405507 (supplied gas 15010499)"

I think that the problem lies with the way the transaction is set up, but i don't know what i'm doing wrong. If i test the same contract function with the same parameters in remix i don't get that error and the transaction goes through. Others less heavy function calls does not generate this error.

Network: Ethereum (Goerli testnet)
Ethereum Wallet: Metamask (10.18.3)
RPC Provider: Alchemy (Free)
Ethers: https://cdn.ethers.io/lib/ethers-5.2.umd.min.js

Javascript Function:
`async function executeContractFunction(indexStart, indexEnd, maxCollect) {

var [account] = await ethereum.request({ method: 'eth_requestAccounts' });
var signer = provider.getSigner(account);
signerAddress = await signer.getAddress();
  
const contractInstance = new ethers.Contract(contract, contractABI, signer); 

var gasEstimated  = await contractInstance.estimateGas.contractFunction(indexStart, indexEnd, maxCollect);
console.log(gasEstimated.toNumber());
var result = await contractInstance.contractFunction(indexStart, indexEnd, maxCollect, {
  "from": signerAddress,
  "gasPrice": gasEstimated,
  "value": "0x0"
});

await provider.waitForTransaction(result['hash']).then(function(transaction) {
  console.log(transaction);
});

return result;

}`

[aghering23]

Any suggestions anyone?

[ricmoo]

You need to increase the maxFeePerGas in you tx. You submitted it with less than the baseFee, so nodes will reject it to mitigate DoS attacks.

If you use provider.getFeeData, you will get recommended fee suggestions.