I got an error when using eth_estimateGas with a value that started with zero like 0x012a05f200

[peerasak-u]

I got this error:

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "invalid argument 0: json: cannot unmarshal hex number with leading zero digits into Go struct field CallArgs.value of type *hexutil.Big"
  }
}

when I send this transaction:

{
  "jsonrpc": "2.0",
  "method": "eth_estimateGas",
  "id": 1,
  "params": [
    {
      "value": "0x012a05f200",
      "to": "0xddcbb8718a8fcb8c73d3194cec55e9767c47b3a5",
      "data": "0x156e29f60000000000000000000000006589e75005a4c2718f8d5b94a7a21f396a8e4cd50000000000000000000000000000000000000000000000007ce66c50e284000000000000000000000000000000000000000000000000000932c874ff30480000",
      "from": "0xe1e06fd942f9b25dd9772658d87f93d463290e69"
    }
  ]
}

and this is what function I called in smart contract on BSC

function mint(address asset, uint256 assetAmount, uint256 pricePerUnit) external payable whenNotPaused nonReentrant returns (uint256) {
		require(asset != address(0), "!asset");
		require(assetAmount > 0, "!amount");
		require(pricePerUnit > 0, "!price");
		require(msg.value == fulfillFee(), "!fee");
		require(manager.assets(asset), "!onlyAsset");

		uint256 inputAmount = (assetAmount * pricePerUnit) / 1 ether;
		uint256 feeAmount = calculateFee(msg.sender, inputAmount, asset);

		IERC20(inputToken).safeTransferFrom(msg.sender, address(this), inputAmount + feeAmount);
		payable(relayer).transfer(msg.value);

		lastId++;
		orders[lastId] = Order(
			msg.sender,
			asset,
			OrderStatus.PENDING,
			inputAmount,
			feeAmount,
			assetAmount,
			pricePerUnit,
			block.timestamp,
			0
		);

		emit Mint(lastId, msg.sender, inputToken, inputAmount, asset, assetAmount, pricePerUnit, feeAmount, msg.value);

		return lastId;
}

I think the problem is in HexExtensions.swift:

public extension Web3Extensions where Base == BigUInt {
    var hexString: String {
        return String(bytes: base.web3.bytes)
    }
}

and

public extension String {
    init(bytes: [UInt8]) {
        self.init("0x" + bytes.map { String(format: "%02hhx", $0) }.joined())
    }
}

if value is BigUInt(5000000000) result from map function will be:

["01", "2a", "05", "f2", "00"]