AngularHandleError

angular.service.ts

        this.http
            .get(url)
            .subscribe(
                result => {
                    this.dataStore.listItems = result;
                    this._listItems.next(result);
                },
                error => {
                    console.log('error');
                },
                () => {
                    console.log('all done');
                }
            );