找不到“管道”编号

ERROR in : Template parse errors:
The pipe 'number' could not be found ("
      </div>
      <div class="col-2">
        {{ listing.currency.abbreviation[ERROR ->]() }}{{ totalCreditRequest() | number : '1.0-1' }}
        <span class="status-badge {{ claims[claims"): /Users/../claims/claims.component.html@50:40
The pipe 'number' could not be found ("m.itemLot.grade }}</td>
            <td class="text-center">{{ listing.currency.abbreviation() }}{{ [ERROR ->]claim.outcomeValue | number : '1.0-1' }}</td>
            <td class="text-center">{{ claim.issue.name"): /Users/../claims/claims.component.html@82:76

更新

我发现它没有编译,有人能给我解释一下常春藤是怎么工作的,为什么不编译?我把它改成了假,现在起作用了。

"angularCompilerOptions": {
  "enableIvy": true
}