小编tah*_*nar的帖子

我正在尝试建立一个角度为6的库，但遇到了一些问题。

在向我的库模块添加--SoumissionStructComponent--之前，没有发生任何错误

但是一旦添加，我就得到了

TypeError: Cannot read property 'toString' of undefined
 at new Input (C:\Users\taha.manar\Documents\workspace\Adjucation-Ihm\node_modules\ng-packagr\node_modules\postcss\lib\input.js:53:20)
 at parse (C:\Users\taha.manar\Documents\workspace\Adjucation-Ihm\node_modules\ng-packagr\node_modules\postcss\lib\parse.js:13:15)
 at new LazyResult (C:\Users\taha.manar\Documents\workspace\Adjucation-Ihm\node_modules\ng-packagr\node_modules\postcss\lib\lazy-result.js:60:16)
 at Processor.<anonymous> (C:\Users\taha.manar\Documents\workspace\Adjucation-Ihm\node_modules\ng-packagr\node_modules\postcss\lib\processor.js:138:12)
...

SoumissionStructComponent.ts

import { Component, OnInit } from '@angular/core';
import { SoumissionService } from './soumission.service';
import { ListElements, ElementList } from './../Common/root-page/model/ElementList';

@Component({
  selector: 'app-soumission-struct',
  templateUrl: './soumission-struct.component.html',
  styleUrls: ['./soumission-struct.component.css']
})
export class SoumissionStructComponent implements OnInit {
  listElements: ListElements;
  elementsList: ElementList[] = [];
  constructor(private soumissionService: SoumissionService) {
soumissionService.getActivatedSoumission().subscribe((r: any) => {

  this.listElements = new ListElements();
  this.listElements.listElts = …