Cannot read property 'transition' null chartjs

Question

I have a dynamic data that is need to be put inside a for loop in order to display the data of interest. I tested putting animation into 0 from this issue and also try the same update() function.

This is my code below

barChartMonth() {
  let backgroundColor: any = [
    'rgba(255, 99, 132, 0.2)',
    'rgba(54, 162, 235, 0.2)',
    'rgba(255, 206, 86, 0.2)',
    'rgba(75, 192, 192, 0.2)',
    'rgba(153, 102, 255, 0.2)',
    'rgba(255, 159, 64, 0.2)',
    'rgba(255, 99, 132, 0.2)',
    'rgba(54, 162, 235, 0.2)',
    'rgba(255, 206, 86, 0.2)',
    'rgba(75, 192, 192, 0.2)',
    'rgba(153, 102, 255, 0.2)',
    'rgba(255, 159, 64, 0.2)'
  ];

  let borderColor: any = [
    'rgba(255,99,132,1)',
    'rgba(54, 162, 235, 1)',
    'rgba(255, 206, 86, 1)',
    'rgba(75, 192, 192, 1)',
    'rgba(153, 102, 255, 1)',
    'rgba(255, 159, 64, 1)',
    'rgba(255,99,132,1)',
    'rgba(54, 162, 235, 1)',
    'rgba(255, 206, 86, 1)',
    'rgba(75, 192, 192, 1)',
    'rgba(153, 102, 255, 1)',
    'rgba(255, 159, 64, 1)'
  ];


  this.barChart = new Chart(this.barCanvas.nativeElement, {
    type: 'bar',
    data: {
      labels: this.monthcostlabor,
    },
    options: {
      scales: {
        yAxes: [{
          ticks: {
            beginAtZero: true
          }
        }]
      }
    }
  });
  for(let bard = 0; bard < this.monthcostlabor.length; bard++){
    this.barChart.data.datasets.push({ label: this.monthcostlabor[bard], backgroundColor: backgroundColor[bard], borderColor: borderColor[bard], borderWidth: 1 });
  }
  this.barChart.data.datasets.forEach(element => {
    element.data.push(this.monthcostglobal)
  });
  this.barChart.update();
}

The code above dynamically choose color, hover and based on the data recorded. See for loop. Is there any other way to solve this issue?