web3 on react-native : Error: Returned error: insufficient funds for gas * price + value

Question

using web3@1.0.0-beta.33 and react-native@0.59.10, because latest web3 have install issue on react-native, after deep research 1.0.0-beta.33 is suitable on react-native

const web3 = new Web3("https://mainnet.infura.io:443"); 
var count = await web3.eth.getTransactionCount(this.state.selectedWallet.publicaddress);
var contractdata = new web3.eth.Contract(abiArray, SensitiveInfo.tokencontract);
var rawTransaction = {
    "from": this.state.selectedWallet.publicaddress,
    "nonce": count,
    "gasPrice": 4500000000,
    "gas": web3.utils.toHex("519990"),
    "gasLimit":web3.utils.toHex("519990"),
    "to": SensitiveInfo.tokencontract,
    "value": "0x0",
    "data": contractdata.methods.transfer(this.state.recipientaddress,web3.utils.toWei('1', 'ether')).encodeABI(),
    "chainId": 0x01
};
var privKey = new Buffer(this.state.selectedWallet.privatekey,'hex');
var tx = new Tx(rawTransaction);
tx.sign(privKey);
var serializedTx = tx.serialize();
web3.eth.sendSignedTransaction('0x' + serializedTx.toString('hex'), (err, hash) =>{
  if (!err) //SUCCESS
      console.log(hash);
  else
      console.log(err);
});    

}

Note

1. the same code base use in web are work, but web3@1.2.1
2. I can very confirmed the from address have enough token and gas
3. have do research said change all hex to number, like gas , gasLimit, value and chainId

Answer 1

Hope help other who develop in react-native, I highly recommend web3@1.0.0-beta.34 for react-native, it more stable. This problem is solved due to some private key issue , but web3 is giving the error Error: Returned error: insufficient funds for gas * price + value , actually not helping if want to deep debug, nothing about gas, price or value. Be careful