Gráfico JS Donut

var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
  type: 'pie',
  data: {
    labels: ['OK', 'WARNING', 'CRITICAL', 'UNKNOWN'],
    datasets: [{
      label: '# of Tomatoes',
      data: [12, 19, 3, 5],
      backgroundColor: [
        'rgba(255, 99, 132, 0.5)',
        'rgba(54, 162, 235, 0.2)',
        'rgba(255, 206, 86, 0.2)',
        'rgba(75, 192, 192, 0.2)'
      ],
      borderColor: [
        'rgba(255,99,132,1)',
        'rgba(54, 162, 235, 1)',
        'rgba(255, 206, 86, 1)',
        'rgba(75, 192, 192, 1)'
      ],
      borderWidth: 1
    }]
  },
  options: {
   	//cutoutPercentage: 40,
    responsive: false,

  }
});
Undefined