TypeError: Observable_1.Observable.throw is not a function

[p3140]

Hi. In file data.service.ts you need to add import 'rxjs/Rx'; for handleError to work. Greetings.

[PostImpatica]

instead of using the whole library, it's best to use: import 'rxjs/add/observable/throw';

[kevin-king]

Just in case this saves someone a couple minutes, make sure to do import 'rxjs/add/observable/throw'; and not import 'rxjs/add/operator/throw';.

[javagose]

You should import Observable from rxjs/RX instead of rxjs/Observable, pulling it this way automatigically get you all of the operators ('map', throw...) import {Observable} from 'rxjs/Rx';

[naveedahmed1]

@javagose please take a look at the below comment by owner of rxjs, you shouldn't import Observable from rxjs/Rx:

https://github.com/ReactiveX/rxjs/issues/1866#issuecomment-302244695