TypeError: Cannot read property 'image' of undefined code example

Example: core.js:6228 ERROR TypeError: Cannot read property 'image' of undefined

<tr ngFor="let item of typeDons">
  <td>{{ item?.name }}</td>               <!-- notice the question mark -->
  <td>{{ item?.description }}</td>
  <td>
    <button type="button" >Edit</button>
    <button type="button" >Delete</button>
  </td>
</tr>