如何跟踪角度项目中的“EmptyError：无顺序元素”错误 [英] How do I trace an `EmptyError: no elements in sequence` bug in an angular project

问题描述

我正在处理一个抛出错误的Angular项目： core.js：1350 ERROR错误：未捕获（在承诺中）：EmptyError：序列中没有元素但是我似乎无法将其跟踪到我的任何应用程序源代码。堆栈跟踪都指向rxjs类。

I'm working on an Angular project that's throwing an error: core.js:1350 ERROR Error: Uncaught (in promise): EmptyError: no elements in sequence but I can't seem to trace it to any of my app source code. The stack trace all points to rxjs classes.

任何人都可以告诉我如何调试此错误，以便我可以在代码中找到真正的错误？

Can anyone tell me how I can debug this error so that I can get to the real error in the code?

core.js:1350 ERROR Error: Uncaught (in promise): EmptyError: no elements in sequence
EmptyError: no elements in sequence
    at new EmptyError (EmptyError.js:28)
    at FirstSubscriber._complete (first.js:154)
    at FirstSubscriber.Subscriber.complete (Subscriber.js:122)
    at MergeMapSubscriber._complete (mergeMap.js:150)
    at MergeMapSubscriber.Subscriber.complete (Subscriber.js:122)
    at MapSubscriber.Subscriber._complete (Subscriber.js:140)
    at MapSubscriber.Subscriber.complete (Subscriber.js:122)
    at ArrayObservable._subscribe (ArrayObservable.js:124)
    at ArrayObservable.Observable._trySubscribe (Observable.js:172)
    at ArrayObservable.Observable.subscribe (Observable.js:160)
    at new EmptyError (EmptyError.js:28)
    at FirstSubscriber._complete (first.js:154)
    at FirstSubscriber.Subscriber.complete (Subscriber.js:122)
    at MergeMapSubscriber._complete (mergeMap.js:150)
    at MergeMapSubscriber.Subscriber.complete (Subscriber.js:122)
    at MapSubscriber.Subscriber._complete (Subscriber.js:140)
    at MapSubscriber.Subscriber.complete (Subscriber.js:122)
    at ArrayObservable._subscribe (ArrayObservable.js:124)
    at ArrayObservable.Observable._trySubscribe (Observable.js:172)
    at ArrayObservable.Observable.subscribe (Observable.js:160)
    at resolvePromise (zone.js:824)
    at resolvePromise (zone.js:795)
    at eval (zone.js:873)
    at ZoneDelegate.invokeTask (zone.js:425)
    at Object.onInvokeTask (core.js:4621)
    at ZoneDelegate.invokeTask (zone.js:424)
    at Zone.runTask (zone.js:192)
    at drainMicroTaskQueue (zone.js:602)
    at <anonymous>

推荐答案

此错误是由Angular路由器的最新版本引起的。
您可以撤销您的版本或将 pathMatch：'full'附加到您的所有路线。

This bug is due to the last version of Angular's Router. You can reverse your version or append pathMatch: 'full' to all of your routes.

请参阅 github问题。

示例

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