UrlRequest has stopped working. Http is working as alternative

Haxe
#1

The following method of getting values from server side file seems to have stopped working. It used to work before though.

var request:URLRequest = new URLRequest( "<serverside file method returning values>" );
var variables:URLVariables = new URLVariables();
variables.v1 = 'value1';
request.data = variables ;
request.method = URLRequestMethod.POST ;
var urlLoader1:URLLoader = new URLLoader();urlLoader1.addEventListener(Event.COMPLETE, handleComplete);
urlLoader1.load(request);

Now when I use it to retrieve values this is the error I get:

Access to XMLHttpRequest at ‘[server side file url]’ from origin ‘http://127.0.0.1:3000’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

Alternatively this still works

var http = new haxe.Http(<server side file url>);
http.onData = function (data:String) 
{
trace(data);
 }

http.onError = function (error) {
  trace('error: $error');
}

http.request();