Problem with Observable after update app to Angular 7 and RxJS 6.3.3
问题 I updated my app to Angular 7 and RxJS 6.3.3 and I've got a problems during making changes into my code. I really need help with that, because I can't to find solution into google or stack overflow. My imports: import { Observable, of } from 'rxjs'; import { map, catchError } from 'rxjs/operators'; import { Injectable, Inject, Optional, InjectionToken } from '@angular/core'; import { Headers, ResponseContentType, Response } from '@angular/http'; import { HttpClient } from '@angular/common