angular - 目标入口点“ngx-cookie-service”中的错误缺少依赖项：在 Angular 10.1.2 中

Question

我正在从本地存储更改为 ngx-cookie-service，但是在运行平台时出现错误：目标入口点“ngx-cookie-service”中的错误缺少依赖项：

• @角/核心
• @角/常见

我的 app.module.ts

import { CookieService } from 'ngx-cookie-service';

@NgModule({
  ...
  providers: [ CookieService ],
  ...
})
export class AppModule { }

Cookie服务

import { CookieService } from 'ngx-cookie-service';

@Injectable({
  providedIn: 'root'
})
export class Service {

  private userSubject: BehaviorSubject<User>;
  private user: Observable<User>;
  
  constructor(private cookieService: CookieService) {
    this.userSubject = new BehaviorSubject<User>(JSON.parse(this.cookieService.get('USER')));
    this.user = this.userSubject.asObservable();
  }