angular - 开发 Windows-Admin-Center 扩展（Angular、Typescript、Powershell）时出现问题

Question

我正在尝试开发 Windows-Admin-Center-extension（Angular、Typescript、Powershell）

我收到错误“无法读取未定义的属性（读取'Powershell'）

这是微软教程：https ://docs.microsoft.com/en-us/windows-server/manage/windows-admin-center/extend/guides/powershell

app.component.ts：

import { Component, OnDestroy, OnInit } from '@angular/core';
import { AppContextService, AuthorizationService, NavigationService } from '@microsoft/windows-admin-center-sdk/angular';
import { PowerShellScripts } from '../generated/powershell-scripts';

// import {Headers, Response} from '@angular/http';

import {Strings} from '../generated/strings';
import { Cim, Http, PowerShell, PowerShellSession } from '@microsoft/windows-admin-center-sdk/core';
import { Observable } from 'rxjs';
import {Shell} from 'node-powershell';
import {map, catchError} from 'rxjs/operators';


@Component({
    selector: 'sme-root',
    templateUrl: './app.component.html'
})
 export class AppComponent implements OnDestroy, OnInit {
  
    constructor(
        public appContext: AppContextService,  private navigationService: NavigationService) {
         }
        public session: PowerShellSession;


    public ngOnInit() {
        this.appContext.ngInit({ navigationService: this.navigationService });
  //    const session = this.appContext.powerShell.createSession('127.0.0.1');
alert ("ngoninit");

 //    const session = this.appContext.powerShell.createAutomaticSession('LAPTOP-5');
 
   }
 
// ----------------------------------------------------------------------------------------------------------------------------------------

 public greetuser() { return "Hallo"; }
// ----------------------------------------------------------------
 public endlichAufruf(): Observable<any> {
   
// const session = this.appContextService.powerShell.createAutomaticSession('127.0.0.1');
let session = this.appContext.powerShell.createAutomaticSession("LAPTOP-5");

  const script2 = PowerShell.createScript(PowerShellScripts.hello[0]);
  
  return this.appContext.powerShell.run(this.session, script3);   //<---------------------------------!!!!!!!!!!!!!!!!!!!!!!
 
  }
 
 // -------------------------------------------------------------------------------------------------------
    public ngOnDestroy() {
      this.session.dispose();
     alert("ngdestroy");
        this.appContext.ngDestroy();
    }
}
   

我究竟做错了什么？