graphql - Gridsome - “类别未在实例上定义但在渲染期间引用”

Question

我正在使用 Gridsome 博客启动器，并且我正在尝试在帖子上方添加一个类别列表：

下面是查询。虽然它/__explore在应用程序本身上按预期工作，但我得到了error: vue.runtime.esm.js?2b0e:619 [Vue warn]: Property or method "category" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option or for class-based components, by initializing the property.

<page-query>
{
  metadata {
    sanityOptions {
      projectId
      dataset
    }
  }
  posts: allSanityPost(sortBy: "publishedAt") {
    edges {
      node {
        id
        title
        slug {
          current
        }
        categories {
          id
          title
        }
        publishedAt(format: "D. MMMM YYYY")
        _rawExcerpt
        mainImage {
          asset {
            _id
            url
          }
          caption
          alt
          hotspot {
            x
            y
            height
            width
          }
          crop {
            top
            bottom
            left
            right
          }
        }
      }
    }
  }
  categories: allSanityCategory(sortBy: "publishedAt") {
    edges {
      node {
        id
        title
      }
    }
  }

有了那个错误，当我用“a”而不是填充它时，它仍然显示两个类别，正如预期的那样{{category.title}}

谢谢你的帮助。艾维。