JQuery net :: ERR_CONNECTION_REFUSED

Question

Я получаю ниже ошибка net :: ERR_CONNECTION_REFUSED, я отправляю сообщение в mu PHP, все на одном компьютере.

function f() {
   var username = $("#user").val();
   var password = $("#pass").val();
   var payload = {"username":username,"password":password};
   var headers = new Headers({'X-Requested-With': 'XMLHttpRequest'});
   var request = $.post("http://localhost:8080/prosveta_projekat/ministarstvo/login.php",payload);
   request.setRequestHeader("Content-type", "application/json");
   request.setRequestHeader("X-Requested-With","XMLHttpRequest");
   request.done(function () {
     var token =  headers.get("Authorization");
     localStorage.setItem("token",token);
   }).fail(function () {
     console.log("error");

   });
}