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当我添加代码出现在下面的字段时，我收到了这个错误：ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked。以前的值：'未定义'。当前值：'1400/07/19'

当我单击更新或添加按钮时出现此错误

 <mat-form-field   appearance="legacy">
  <input matInput  #datepickerInput [(ngModel)]="local_data.personRegisterDate"  formControlName="personRegisterDate" />
  <ng-persian-datepicker
    [input]="datepickerInput"
    [uiTheme]="'dark'"
    [timeMeridian]="true"
    [dateFormat]="'jYYYY/jMM/jDD'">
  </ng-persian-datepicker>
</mat-form-field>

我该如何解决这个错误谢谢

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