Cannot read property 'value' of undefined

出错代码

<div class="modal-body" style="padding: 50px;">
    <p style="text-align:center;">Packaging Type</p>
    <select class="form-control customSelect" [(ngModel)]="popuppackagingType" name="popuppackagingType" (change)="popupPackagTypeChange(packagingtype.value)"#popuppackagingtype>
      <option *ngFor="let type of packagingTypes" value="{{type.value}}">
          {{type.key}}
      </option>
  </select>
  </div>

具体出错的地方

解决方法是

原因是：点击 =》自己理解