XSJS file giving error

Hi,

I am following opensap course on hana development

when i tried to create the hello world program as mentioned in the course material I am getting an error as follows, while trying to run the program. Please some one can help me on this

The follwing is the code which I copied from opensap

$.response.contentType = "text/html";

var output = "Hello Hana World<br><br>";

var conn = $.db.getConnection();

var pstmt = conn.prepareCall("select * from DUMMY");

var rs = pstmt.execute();

if (!rs.next()) {

  $.response.setBody(" Fail to retrieve Data");

  $.response.status = $.net.http.INTERNAL_SERVER_ERROR;

}

else {

  output = output + "This is the response from My SQL :"

  + rs.getString(1);

}

rs.close();

pstmt.close();

conn.close();

$.response.setBody(output);

The above code is giving me an error as the attached image.

It seems some error in the syntax rs.next()