Request Ajax in Live Server doesn't work for printing

my cashier project build in laravel. i need print receipt from web browser via mobile bluetooth.

i use mike42/escpos and RawBT package.

my program is working fine when running in localhost. but, doesn't work in live server

this is my VIEW :

<button
   onclick="ajax_print('{{url('/cashier/pay',[$id])}}',this)"
   class="btn btn-sm btn-warning">Pay
</button>

this is my AJAX

function ajax_print(url, btn) {
    b = $(btn);
    b.attr('data-old', b.text());
    b.text('wait');
    $.get(url, function (data) {
        window.location.href = data;  // main action
    }).fail(function () {
        alert("ajax error");
    }).always(function () {
        b.text(b.attr('data-old'));
    })
}

and this is my Controller :

try{    
    $profile = CapabilityProfile::load("POS-5890");
    $connector = new RawbtPrintConnector();
    $printer = new Printer($connector, $profile);
        
    // Content
    $printer->setJustification(Printer::JUSTIFY_CENTER);
    $printer->selectPrintMode(Printer::MODE_DOUBLE_WIDTH);
    $printer->text("Hello World.\n");            
                    
    //Print
    $printer->cut();
    $printer->pulse();
  } catch (Exception $e) {
      return redirect()->route('cashierindex')->with('error','Something Error');
  } finally {
      $printer->close();
  }

Can you help me, why this code doesn't work in live server, but working fine in localhost ?