reason.js

// This is universal, works with Infura -- set provider accordingly

const ethers = require('ethers')
//const provider = ethers.getDefaultProvider('rinkeby')
const provider = new ethers.providers.JsonRpcProvider(process.env.WEB3_URL)

function hex_to_ascii(str1) {
	var hex  = str1.toString();
	var str = '';
	for (var n = 0; n < hex.length; n += 2) {
		str += String.fromCharCode(parseInt(hex.substr(n, 2), 16));
	}
	return str;
 }

async function reason() {
    var args = process.argv.slice(2)
    let hash = args[0]
    console.log('tx hash:', hash)
    console.log('provider:', process.env.WEB3_URL)

    let tx = await provider.getTransaction(hash)
    if (!tx) {
        console.log('tx not found')
    } else {
        let code = await provider.call(tx, tx.blockNumber)
        let reason = hex_to_ascii(code.substr(138))
        console.log('revert reason:', reason)
    }
}

reason()

revert-reason

#!/bin/bash

# This is for geth

# Fetching revert reason -- https://ethereum.stackexchange.com/questions/48383/how-to-receive-revert-reason-for-past-transactions

if [ -z "$1" ]
then
    echo "Usage: revert-reason <TX_HASH>"
    exit
fi

TX=$1
SCRIPT=" tx = eth.getTransaction( \"$TX\" ); tx.data = tx.input; eth.call(tx, tx.blockNumber)"

geth --exec "$SCRIPT" attach http://localhost:8545 | cut -d '"' -f 2 | cut -c139- | xxd -r -p
echo

The bash script gives an error

-bash: ./revert-reason.sh: line 9: syntax error near unexpected token `fi'
-bash: ./revert-reason.sh: line 9: `fi'

Should this snippet work also with latest 5.4 ethers.js please?

I'm trying it together with typescript and there is type issue between getTransaction() returning TransactionResponse and call() method requesting TransactionRequest.

When I tried to re-type it then I'm still receiving only:

code:'CALL_EXCEPTION'
data:'0x'
reason:'missing revert data in call exception'

Though you can use ethers.utils.toUtf8String('0x' + code.substr(138)); on L27 and not need hex_to_ascii at all

Wow it works!! But is this really all I need?

Should this snippet work also with latest 5.4 ethers.js please?

I'm trying it together with typescript and there is type issue between getTransaction() returning TransactionResponse and call() method requesting TransactionRequest.

When I tried to re-type it then I'm still receiving only:

code:'CALL_EXCEPTION'
data:'0x'
reason:'missing revert data in call exception'

same with me

This works for me:

     const tx = await provider.getTransaction(txHash)
      const response = await provider.call(
        {
          to: tx.to,
          from: tx.from,
          nonce: tx.nonce,
          gasLimit: tx.gasLimit,
          gasPrice: tx.gasPrice,
          data: tx.data,
          value: tx.value,
          chainId: tx.chainId,
          type: tx.type ?? undefined,
          accessList: tx.accessList,
        },
        tx.blockNumber,
      )

     // This should be your error code
      const firstFourBytes = response.slice(0, 10)

Hope this will help you guys!

Hope this will help you guys!

Was it difficult to paste the code? Why did you send a screenshot? 🤦🏼‍♂️

  const tx = await provider.getTransaction(txHash)
  const response = await provider.call(
    {
      to: tx.to,
      from: tx.from,
      nonce: tx.nonce,
      gasLimit: tx.gasLimit,
      gasPrice: tx.gasPrice,
      data: tx.data,
      value: tx.value,
      chainId: tx.chainId,
      type: tx.type ?? undefined,
      accessList: tx.accessList,
    },
    tx.blockNumber,
  )
  const reason = ethers.utils.toUtf8String('0x' + response.substring(138))