estimateGas call fails in optimism network.

Description : estimateGas call fails if I try optimism rpc endpoints, with others it’s successfully returning the result.

I’m using “ethers”: “^5.5.3” version in my project, and while trying the following code I get the error: Error: gas required exceeds allowance

const ethers = require('ethers')
async function test() {
  let url
  url = 'https://kovan.optimism.io'
  // url = 'https://polygon-rpc.com'
  // url ="https://kovan.poa.network"
  // url = 'https://rinkeby.arbitrum.io/rpc'
  // url = 'https://mainnet.optimism.io'
  
  
  let provider=  new ethers.providers.JsonRpcProvider(url)
  const gasPrice =await provider.getGasPrice();
  const tx = {
    to: '0xb4DE0833771eae55040b698aF5eB06d59E142C82',     
    value: '0x1',
  }
  const estimatedGas = await provider.estimateGas(tx);
  
  console.log(gasPrice.toString())
  console.log(estimatedGas.toString())
}

test()

Here’s the full error that I am getting.

All the other endpoints works fine except the optimism ones. Can anyone suggest if I am doing something wrong?

Thanks.

[smartcontracts]

We (the Optimism team) did additional research and found that this was an issue over at QuickNode, the RPC provider behind both mainnet.optimism.io and kovan.optimism.io. QuickNode upgraded its infrastructure over the last few days and it seems that this problem has been fixed along with that upgrade. This can safely be closed as it’s not an issue with ethers.js and it’s also been fixed.

[smartcontracts]

I think this is probably an issue with some quirk in the Optimism node and unlikely to be an Ethers issue.