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我正在尝试使用角度材料网站上的基本日期选择器。

<span class="calendar">
            <mat-form-field appearance="outline">
                <mat-label>Date</mat-label>
                <input                
                 matInput 
                 [matDatepicker]="picker">
                <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
                <mat-datepicker #picker></mat-datepicker>
              </mat-form-field>
</span>  

但是当我单击 datepicker 时出现以下错误

core.js:6185 ERROR TypeError: format.replace is not a function
    at expandFormat (moment.js:537)
    at formatMoment (moment.js:521)
    at Moment.format (moment.js:3975)
    at MomentDateAdapter.format (material-moment-adapter.js:126)
    at MatCalendarHeader.get periodButtonText [as periodButtonText] (datepicker.js:2094)
    at MatCalendarHeader_Template (datepicker.js:2233)
    at executeTemplate (core.js:11949)
    at refreshView (core.js:11796)
    at refreshComponent (core.js:13229)
    at refreshChildComponents (core.js:11527)

但是当在堆栈闪电战中尝试相同的代码时,它可以工作。此外,我正在从“@angular/material/datepicker”导入和导出 { MatDatepickerModule };在模块中。这没用。

各位能不能给点建议

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