How to use TSPL print

[vukhacbiet]

Please provide a guide to print with this package.

I tried to print with a label printer (TSPL) XPrinter 350BM

Here is my code:

Future printStickers(String host, Uint8List bytes) async {
  TcpPrinterConnector connector = TcpPrinterConnector('192.168.1.23');
  TsplPrinter printer = TsplPrinter(
    connector,
    dpi: "200",
    sizeHeight: "25",
    sizeWidth: "40",
  );
  await printer.image(bytes);
  printer.beep();
}

Nothing happen, when remove printer.image, beep() work.

[vukhacbiet]

Printer error when do image() and I have to restart it.