我想把data数据上传到云数据库

错误：VM1378:2 (in promise) MiniProgramError

errCode: -501007 invalid parameters | errMsg: [InvalidParameter] Check request parameter fail. Please check your request, but if the problem cannot be solved, contact us.

Error: errCode: -501007 invalid parameters | errMsg: [InvalidParameter] Check request parameter fail. Please check your request, but if the problem cannot be solved, contact us.

playlist.js:

const db = wx.cloud.database() 
Page({
  data: {
        playlist:[{"_id":"1""playCount":1.4641238e+06,"highQuality":false,"type":0.0,"canDislike":true,"name":"天气转热了，适合听点凉爽的歌。"},
         {"_id":"08560c9e5d042a5c0174f1da7aa357aa","highQuality":false,"playCount":622822.6,"id":2.740107647e+09,"name":"「时空潜行","type":0.0},
         {"_id":"08560c9e5d042a5c0174f1de21c7e79e","id":2.828842343e+09,"type":0.0,"name":"粤语","canDislike":true},
         {"_id":"08560c9e5d042a5d0174f1e67d1bb16f","playCount":7.719329e+06,"highQuality":false，"id":9.17794768e+08,"type":0.0,"name":"翻唱简史","canDislike":true}
          ]
  },
  playlisttodb()
  {
    const len=this.data.playlist.length
    for (let i = 0; i < len; i++) {
       let that=this
       let arr=this.data.playlist[i]
       that.setData({
         arr:arr,
       })
       db.collection('playlistdb').add({
        data:
        {
          arr,
          createTime: db.serverDate(),
        }
      })
    }
 },
onLoad: function (options) {
  },
onReady: function () {
  }
}

playlist.wxml

<view>
  <button bind:tap="playlisttodb">歌单转入数据库</button>
</view>