Error: Only replay-protected (EIP-155) transactions allowed over RPC

Question

When I try to send funds from a token address to another I encounter this error: only replay-protected (EIP-155) transactions allowed over RPC

My Code:

const contract = new web3.eth.Contract(ABI,token_contract_address);
const data = contract.methods.transfer(to, req.body.value).encodeABI();

const rawTransaction = {
    'from': from,
    'nonce': web3.utils.toHex(web3.eth.getTransactionCount(from)),
    'gasPrice': web3.utils.toHex(web3.eth.gasPrice),
    'gasLimit': web3.utils.toHex(21000),
    'to': token_contract_address,
    'value': 0,
    'data': data,
    'chainId': web3.utils.toHex(chainid)
};

const privateKey = new Buffer.from(req.body.PrivateKey, 'hex');
const tx = new Tx(rawTransaction);
tx.sign(privateKey);

const serializedTx = tx.serialize();
web3.eth.sendSignedTransaction(('0x' + serializedTx.toString('hex')),req.body.PrivateKey) 
.then(function (result) {
    res.statusCode = 200;
    res.setHeader('Content-Type', 'application/json');
    res.json(result*decimals);
    console.log(result);
})
.catch((err) => next(err));

Notice I have already added ChainId