Cannot read property 'showLoading' of undefined

[SealinGp]

appid-total-inuse-chart.component.html

  <highcharts-chart
    class="appid-used-rate"
    style="display: block;"
    [Highcharts]="HighchartsInstance"
    constructorType="chart"
    [options]="poolUsedRateChartOptions"  
    [callbackFunction]="poolUsedCallback"
  ></highcharts-chart>

appid-total-inuse-chart.component.ts

console log: