Grid date filter don't work

[Kylian]

I use <kendo-grid-filter-cell> in my grid to filter dates.

These filter don't work

Do you know why these filter don't work.

<kendo-grid
  [kendoGridBinding]="collaborateurData"
  [filterable]="true"
  [resizable]="true"
  [sortable]="true"
  [pageable]="true"
  [pageSize]="15"
  class="table"
>
  <!-- Colonne Date Entrée Groupe -->
  <kendo-grid-column field="DateEntreeGroupe" title="Date Entrée Groupe">
    <ng-template kendoGridFilterCellTemplate let-filter let-column="column">
      <kendo-grid-date-filter-cell
        [column]="column"
        [filter]="filter"
        [showOperators]="false"
        [format]="format"
        [formatPlaceholder]="{
          day: 'J',
          month: 'M',
          year: 'yyyy',
          hour: 'h',
          minute: 'min',
          second: 's'
        }"
      >
      </kendo-grid-date-filter-cell>
    </ng-template>
    <ng-template kendoGridCellTemplate let-collaborateur>
      <a
        [routerLink]="[
          'collaborateurs',
          collaborateur.TypeSalarie,
          collaborateur.Id
        ]"
        >{{ collaborateur.DateEntreeGroupe | date: 'yyyy-dd-MM' }}</a
      >
    </ng-template>
  </kendo-grid-column>
</kendo-grid>