无法从JSON服务器获取数据

Question

我在json服务器中添加了一个名为用户的对象。当我尝试使用Angular中的Http记录数据时，可以使用http://localhost:3000/users.But访问该对象，在控制台中出现错误。

有人可以帮忙吗？

编辑：我检查了jsonapi.typicode.com，并且有效

以下是错误：

Object { _body: error, status: 0, ok: false, statusText: "", headers: {…}, type: 3, url: null }

core.js:1673
defaultErrorLogger
core.js:1673
./node_modules/@angular/core/fesm5/core.js/ErrorHandler.prototype.handleError
core.js:1719
next
core.js:4319:109
./node_modules/@angular/core/fesm5/core.js/EventEmitter.prototype.subscribe/schedulerFn<
core.js:3555:34
./node_modules/rxjs/_esm5/internal/Subscriber.js/SafeSubscriber.prototype.__tryOrUnsub
Subscriber.js:195
./node_modules/rxjs/_esm5/internal/Subscriber.js/SafeSubscriber.prototype.next
Subscriber.js:133
./node_modules/rxjs/_esm5/internal/Subscriber.js/Subscriber.prototype._next
Subscriber.js:77
./node_modules/rxjs/_esm5/internal/Subscriber.js/Subscriber.prototype.next
Subscriber.js:54
./node_modules/rxjs/_esm5/internal/Subject.js/Subject.prototype.next
Subject.js:47
./node_modules/@angular/core/fesm5/core.js/EventEmitter.prototype.emit
core.js:3539:52
onHandleError/<
core.js:3846:48
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invoke
zone.js:388
./node_modules/zone.js/dist/zone.js/</Zone.prototype.run
zone.js:138
./node_modules/@angular/core/fesm5/core.js/NgZone.prototype.runOutsideAngular
core.js:3783
onHandleError
core.js:3846
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.handleError
zone.js:392
./node_modules/zone.js/dist/zone.js/</Zone.prototype.runTask
zone.js:191
./node_modules/zone.js/dist/zone.js/</ZoneTask.invokeTask
zone.js:496
ZoneTask/this.invoke
zone.js:485
timer