EmptyError:顺序中没有元素 [英] EmptyError: no elements in sequence

问题描述

我正在将Angular2应用程序从2.0.0升级到2.3.0，并且遇到以下错误.有什么想法吗?我看到了另一篇文章( Angular 2.0.1路由器EmptyError :没有顺序排列的元素)，但是尝试此操作后，问题仍然存在.是什么导致此错误?

I'm upgrading my Angular2 app from 2.0.0 to 2.3.0, and I'm running into the following error. Any ideas as to why? I saw this other post (Angular 2.0.1 Router EmptyError: no elements in sequence), but after trying this, the issue still remains. What causes this error?

Error: Uncaught (in promise): EmptyError: no elements in sequence
Error: no elements in sequence
    at EmptyError.ZoneAwareError (zone.js:672)
    at new EmptyError (EmptyError.ts:13)
    at FirstSubscriber._complete (first.ts:161)
    at FirstSubscriber.Subscriber.complete (Subscriber.ts:122)
    at Subject._subscribe (Subject.ts:109)
    at Subject.Observable.subscribe (Observable.ts:98)
    at Observable._subscribe (Observable.ts:158)
    at Observable.subscribe (Observable.ts:98)
    at Observable._subscribe (Observable.ts:158)
    at FirstOperator.call (first.ts:82)
    at Observable.subscribe (Observable.ts:96)
    at Object.subscribeToResult (subscribeToResult.ts:32)
    at MergeAllSubscriber._next (mergeAll.ts:82)
    at MergeAllSubscriber.Subscriber.next (Subscriber.ts:95)
    at MapSubscriber._next (map.ts:80)
    at resolvePromise (zone.js:475) [angular]
    at resolvePromise (zone.js:460) [angular]
    at /libs/zone.js/dist/zone.js:509:17 [angular]
    at Object.onInvokeTask (core.umd.min.js:32) [angular]
    at ZoneDelegate.invokeTask (zone.js:261) [angular]
    at Zone.runTask (zone.js:151) [<root> => angular]
    at drainMicroTaskQueue (zone.js:405) [<root>]
    at ZoneTask.invoke (zone.js:336) [<root>]ErrorHandler.handleError @ core.umd.min.js:31next @ core.umd.min.js:32generatorOrNext.object.schedulerFn @ core.umd.min.js:32SafeSubscriber.__tryOrUnsub @ Subscriber.ts:238SafeSubscriber.next @ Subscriber.ts:190Subscriber._next @ Subscriber.ts:135Subscriber.next @ Subscriber.ts:95Subject.next @ Subject.ts:61EventEmitter.emit @ core.umd.min.js:32NgZone.triggerError @ core.umd.min.js:32onHandleError @ core.umd.min.js:32ZoneDelegate.handleError @ zone.js:233Zone.runGuarded @ zone.js:129_loop_1 @ zone.js:416drainMicroTaskQueue @ zone.js:425ZoneTask.invoke @ zone.js:336

我还注意到，当我尝试更改为使用Guards的路线时，会引发NavigationError对象.但是，只有上面的错误是控制台中显示的错误.

I've also noticed that a NavigationError object is thrown when I try to change to a route that uses Guards. But only the error above is what is shown in the console.

NavigationError {id: 2, url: "/home", error: EmptyError}

我有点茫然，不胜感激.

I'm kind of at a loss and would appreciate any help.

推荐答案

在将RxJS 5.5.3与angular(版本4/5)一起使用时，会发生此错误，因此只需跳过RxJS 5.5.3，并通过以下方式使用RxJS 5.5.4:将"rxjs": "^5.5.4"添加到您的项目package.json中.

This error happens when using RxJS 5.5.3 with angular (version 4/5), so just skip RxJS 5.5.3, and use RxJS 5.5.4 by adding "rxjs": "^5.5.4" to your project package.json.

在RxJS 5.5.4出现之前，请回答:(旧的，不要这样做)

• 在package.json上锁定版本5.5.2 RxJS 源
• 添加pathMatch:在空路径上已满" 源

• Lock version 5.5.2 RxJS on package.json source
• add pathMatch: 'full' on empty paths source

看起来这是一个 RxJS问题，应对此进行修补不一会儿. 来源

It looks like this is an RxJS issue which should be patched pretty soon. source

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