Firebase cloud messaging "Registration failed - push service error" on Electron and node-webkit

Question

I am trying to implement Firebase web cloud messaging on node-webkit (NWJS) application, but when I try to get a token its returning a error: "Registration failed - push service error". Here is the code snippet I am using to get the token after authentication.

messaging.requestPermission()
  .then(function() {
    console.log("have Permission");
    return messaging.getToken();
  })
  .then(function(token) {
    console.log(token);
  })
  .catch(function(err) {
    console.log("Error occured");
    console.log(err);
  });