reason.js

const path = require("path");
require("dotenv").config({ path: path.resolve(process.cwd(), ".env") });

const infuraRPC = `${process.env.INFURA_URL}${ process.env.INFURA_KEY }`;
const ethers = require("ethers");
const provider = new ethers.providers.JsonRpcProvider(infuraRPC);
const args = process.argv.slice(2);
const hash = (args.length >= 1)? args[0] : process.env.HASH;
console.log("tx hash:", hash);
console.log("provider:", infuraRPC);

(async function reason() {
  let tx = await provider.getTransaction(hash);
  if (!tx) {
    console.log("tx not found");
  } else {
    let code = await provider.call(tx, tx.blockNumber);
    let reasonResponse = ethers.utils.toUtf8String("0x" + code.substr(138));
    console.log("revert reason:", reasonResponse);
  }
})();

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