我对chartJS相当陌生，我正在寻找一种在我的甜甜圈图表上显示标签的方法。我尝试在选项中将图例的可见性设置为true，但仍然不起作用。

var data = [{
        data: [successfulBuildsCount, failureBuildsCount],
        labels: ["Successes", "Failures"],
        backgroundColor: [
          "green",
          "red"
        ],
        borderColor: "#fff"
      }];
      var options = {
        legend: { display: true, },
        title: {
          display: true,
        },
        plugins: {
          datalabels: {
            formatter: (value, ctx) => {
              let sum = 0;
              let dataArr = ctx.chart.data.datasets[0].data;
              dataArr.map(data => {
                sum += data;
              });
              let percentage = (value * 100 / sum).toFixed(2) + "%";
              return percentage;
            },
            color: '#fff',
          }
        }
      };
      var ctx = document.getElementById("chartContainer");
      var myChart = new Chart(ctx, {
        type: 'doughnut',
        data: {
          datasets: data
        },
        options: options
      });

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