TRESTRequest error when downloading images

Hi,

I have an application that downloads images from a webroker app and this was working fine on Delphi Seattle, but when i tried to port it to Berlin, now i get an error.

"REST request failed: No mapping for the Unicode character exists in target multi-byte code page"

{Client side}
JpegFile:=ExtractFilePath(ParamStr(0)+'badge.jpg');
  LRestRequest.Timeout := 10000;
  LRestRequest.Params.Clear;
  LRestRequest.Resource:='GetImage';
  LRestRequest.AddParameter('username','USR');
  LRestRequest.AddParameter('password','PWD');
  LRestRequest.AddParameter('EventID','E0000x');
  LRestRequest.AddParameter('PhotoName','_Badge');
  LRestRequest.Execute;
  if LRestResponse.StatusCode = 200 then
  begin
    FileStream:=TFileStream.Create(JpegFile, fmCreate or fmOpenWrite);
     try
      FileStream.WriteData(LRestResponse.RawBytes, Length(LRestResponse.RawBytes));
     finally
        FileStream.DisposeOf;
     end;
  end;

{Server side}
var
 Image:String;
begin
    Image:=ExtractFilePath(ParamStr(0)) + 'TestImage.jpg';
    if FileExists(Image) then
     begin
      Response.ContentType:='image/jpg';
      Response.ContentStream:=TFileStream.Create(Image ,fmOpenRead or fmShareDenyNone );
     end else
     Response.StatusCode:=404;

 is there any fix this?

Thanks

Mauricio Herrera