Why will my web app not send data to my google firebase database?

My web app using ember.js will not send data to the google firebase realtime database

I have viewed multiple tutorials and searched the web and cannot seem to find the answer to my problem. I am using ember v 3.10

actions: {

saveInvitation() {
  const email = this.get.emailAddress;

  const newInvitation = this.store.createRecord('invitation', { email });

  newInvitation.save().then(response => {
    this.set('responseMessage', `Thank you! id: ${response.get('id')}`);
    this.set('emailAddress', '');
  });

},

}

import DS from 'ember-data';

export default DS.Model.extend({

email: DS.attr('string'),

});