Calling rebase function errors with Tnxhash is undefined

Hi, i am trying to call rebase function of my contract using javascript code ,i tried this code to call rebase function in my contract which i deployed on ethereum it works fine,but when i did same process for binance it produce tnx hash has undefined.herewith i am attaching code and screenshot.

const Tx   =  require('ethereumjs-tx').Transaction
const { Contract } = require('ethers')
const Web3 = require('web3')
const web3 = new Web3('https://bsc-dataseed.binance.org/') //your infura id

const account1 = '0xEB50a80F7DE37AF8669b0C4973B2A33E8502c5a7' // Your account address 1
var contractAddress = "0xFFa3D019C2D46973B42358fC6490608584783034"; //Your implementation address
const abiArray =[
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"internalType": "address",
				"name": "previousOwner",
				"type": "address"
			},
			{
				"indexed": true,
				"internalType": "address",
				"name": "newOwner",
				"type": "address"
			}
		],
		"name": "OwnershipTransferred",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"internalType": "address",
				"name": "destination",
				"type": "address"
			},
			{
				"indexed": false,
				"internalType": "uint256",
				"name": "index",
				"type": "uint256"
			},
			{
				"indexed": false,
				"internalType": "bytes",
				"name": "data",
				"type": "bytes"
			}
		],
		"name": "TransactionFailed",
		"type": "event"
	},
	{
		"inputs": [
			{
				"internalType": "address",
				"name": "destination",
				"type": "address"
			},
			{
				"internalType": "bytes",
				"name": "data",
				"type": "bytes"
			}
		],
		"name": "addTransaction",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "eBNBpolicyref",
		"outputs": [
			{
				"internalType": "contract eBNBPolicy",
				"name": "",
				"type": "address"
			}
		],
		"stateMutability": "view",
		"type": "function"
	},
	{
		"inputs": [
			{
				"internalType": "address",
				"name": "eBNBpolicyref_",
				"type": "address"
			}
		],
		"name": "initialize",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "owner",
		"outputs": [
			{
				"internalType": "address",
				"name": "",
				"type": "address"
			}
		],
		"stateMutability": "view",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "rebase",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [
			{
				"internalType": "uint256",
				"name": "index",
				"type": "uint256"
			}
		],
		"name": "removeTransaction",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "renounceOwnership",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [
			{
				"internalType": "uint256",
				"name": "index",
				"type": "uint256"
			},
			{
				"internalType": "bool",
				"name": "enabled",
				"type": "bool"
			}
		],
		"name": "setTransactionEnabled",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [
			{
				"internalType": "uint256",
				"name": "",
				"type": "uint256"
			}
		],
		"name": "transactions",
		"outputs": [
			{
				"internalType": "bool",
				"name": "enabled",
				"type": "bool"
			},
			{
				"internalType": "address",
				"name": "destination",
				"type": "address"
			},
			{
				"internalType": "bytes",
				"name": "data",
				"type": "bytes"
			}
		],
		"stateMutability": "view",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "transactionsSize",
		"outputs": [
			{
				"internalType": "uint256",
				"name": "",
				"type": "uint256"
			}
		],
		"stateMutability": "view",
		"type": "function"
	},
	{
		"inputs": [
			{
				"internalType": "address",
				"name": "newOwner",
				"type": "address"
			}
		],
		"name": "transferOwnership",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	}
]//abi for contract

const privateKey1 =  Buffer.from(process.env.PRIVATE_KEY_1,'hex')
//const privateKey1 = process.env.PRIVATE_KEY_1;
//new Buffer.from(privateKey1.substring(2,66), 'hex')
console.log("Private Key " + privateKey1);
//const privateKey2 = Buffer.from(process.env.PRIVATE_KEY_2,'hex')
const contract = new web3.eth.Contract(abiArray,contractAddress)
const Rebase = contract.methods.rebase().encodeABI()
web3.eth.getBalance(account1 ,(err,bal)=>{console.log(web3.utils.fromWei(bal,"ether"))})//we print the balance of our account
//this function calls by 1 min interval
function rebase(){
	
var today = new Date();
var date = today.getFullYear()+'-'+(today.getMonth()+1)+'-'+today.getDate();
var time = today.getHours() + ":" + today.getMinutes() + ":" + today.getSeconds();
var dateTime = date+' '+time;
console.log('Current Timestamp of rebase execution => :', dateTime)	
web3.eth.getTransactionCount(account1, (err,txCount) => {
  console.log("transaction so far",txCount)
    const txObject = {      
    nonce:    web3.utils.toHex(txCount),
    to:       contractAddress,
    gasLimit: web3.utils.toHex(800000),
    gasPrice: web3.utils.toHex(web3.utils.toWei('10', 'gwei')),
    data :Rebase,
	chainId: 56
    
  }
  console.log('Step 1 ');
  const tx =new Tx(txObject);
  //const tx =new Tx(txObject, {chain: 'rinkeby'})
  console.log('Step 2 ');
  tx.sign(privateKey1)
  const serializedTx = tx.serialize()
    console.log('Step 3 ');
  const raw = '0x' + serializedTx.toString('hex')
  web3.eth.sendSignedTransaction(raw, (err, txHash) => {
    console.log('txHash:', txHash)
  })
 
console.log('Completed current execution ');
console.log("Tx Hash "+txObject)
})
web3.eth.getBalance(account1 ,(err,bal)=>{console.log(web3.utils.fromWei(bal,"ether"))})//Here we get the balance of our account after rebase
  console.log('Step 10 ');
}


setInterval(rebase,60000)  //rebase 1min

I am not sure, but I think the function is a type of Promise, so maybe you should use async-await.

Thanks @skyge,but it worked on ethereum platform,my doubt is “Is there any specific id or name have to given for binance platform”.

Is there any chain name for Binance mainnet like rinkeby specified in this “const tx =new Tx(txObject, {chain: ‘rinkeby’})”.can you know the specific name of Binance mainnet plaese let me Know.