How to know BG96 (RAK8212) worked or not?

there is one error message "ERROR { "code": -15,
"message": "no response"
}
after we changed the code as below

function connectionReady() {
    
   console.log("connectionReady.");
    
  var http = require("http");
  http.get("http://www.pur3.co.uk/hello.tx­t", function(res) {
    res.on('data', function(data) {
      console.log(data);
    });
  })
  .on('error', function(err) {
      console.log('ERROR', err);
   });
}