The value that #each loops over must be an Array

gistfile1.txt

import Ember from 'ember';

export default Ember.Controller.extend({
  headers: ['Scare', 'Total'],
  data: [{ scare: 'Sullivan', total: 100232 }, { scare: 'Randall', total: 99905 }, { scare: 'Ranft', total: 79405 }],
  scare: 'Jon',
  total: 2
});