angular 2使用ng2-uploader上传文件

Question

我是角度2的新手。我正在使用ng2-uploder上传文件。文件正在上传成功，但它在控制台中显示我的错误：

    ERROR TypeError: _this.files.filter is not a function
    at ng-file-select.ts:41
    at SafeSubscriber.schedulerFn [as _next] (core.es5.js:3840)
    at SafeSubscriber.__tryOrUnsub (Subscriber.js:236)
    at SafeSubscriber.next (Subscriber.js:185)
    at Subscriber._next (Subscriber.js:125)
    at Subscriber.next (Subscriber.js:89)
    at EventEmitter.Subject.next (Subject.js:55)
    at EventEmitter.emit (core.es5.js:3814)
    at XMLHttpRequest.xhr.onreadystatechange (ng2-uploader.ts:103)
    at XMLHttpRequest.wrapFn [as __zone_symbol___onreadystatechange] (zone.js:1199)
    at ZoneDelegate.webpackJsonp.1218.ZoneDelegate.invokeTask (zone.js:398)
    at Object.onInvokeTask (core.es5.js:4116)
    at ZoneDelegate.webpackJsonp.1218.ZoneDelegate.invokeTask (zone.js:397)
    at Zone.webpackJsonp.1218.Zone.runTask (zone.js:165)
    at XMLHttpRequest.ZoneTask.invoke (zone.js:460)