ImageDetail-4.vue

<script>
export default {
  ...
  computed: {
      title() {
        if (this.imageInfo) {
          return this.imageInfo.title._content || 'Untitled Image'
        } 
        return ''
      },
      ownerName() {
        if (this.imageInfo) {
          return this.imageInfo.owner.username
        }
        return ''
      },
      description() {
        if (this.imageInfo) {
          return this.imageInfo.description._content || 'No description available.'
        }
        return ''
      },
      tags() {
        if (this.imageInfo) {
          return this.imageInfo.tags.tag
        }
        return []
      }
    },
    ...
  }
  </script>