我有一个控制器，我试图查询上周最受欢迎的帖子，按最受欢迎的帖子排序，最大上限为50个帖子。我试图使用aggregate（）方法;然而，我不确定我是否正确。当我在失眠症中运行查询时，我得到一个error，如下所示：

{
    "ok": 0,
    "code": 8000,
    "codeName": "AtlasError"
}

字符串
以下是我的post model：

const postSchema = mongoose.Schema({
  title: {
    type: String,
    required: true
  },
  message: {
    type: String,
    required: true
  },
  //replace creator with name
  name: String,
  creator: String,
  tags: [String],
  size: String,
  selectedFile: String,
  likes: {
    type: [String],
    default: [],
  },
  comments: {
    type: [String],
    default: []
  },
  createdAt: {
    type: Date,
    default: new Date(),
  },
   dogTreats: {
    type: Number,
    default: 0,
    required: false,
  }
});

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这是我的控制器/post.js

export const getPopular = async (req, res) => {
  //get current time
  let currentTime = new Date()
  //get from 7 days ago
  currentTime.setDate(currentTime.getDate()-7)
  console.log(currentTime)    // -> output 2022-09-04T19:29:39.612Z
  try {
    //sort posts by most likes and within 7 days ago, but with a max of 50 posts
    const mostPopular = await PostMessage.aggregate([{"$sort": { likes: -1}}, { "$limit": 50}, { "$gt": currentTime }])
    res.status(200).json(mostPopular)
} catch (error) {
    res.status(500).json(error)
}
}

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