云函数本地调试和上传云后均错误

上传后执行成功过几次，本地调试一直错误

[error] 函数执行失败（耗时 583ms） CloudSDKError: errCode: -1 unknown error | errMsg: collection.add:fail Error: 

          400 Bad Request

        ; at collection.add api; 

    at returnAsCloudSDKError (D:\badminton.enroll.1.0\cloudfunctions\investUser\node_modules\wx-server-sdk\index.js:6086:16)

    at Object.returnAsFinalCloudSDKError (D:\badminton.enroll.1.0\cloudfunctions\investUser\node_modules\wx-server-sdk\index.js:6100:15)

    at Promise (D:\羽毛球项目\badminton.enroll.1.0\cloudfunctions\investUser\node_modules\wx-server-sdk\index.js:1198:32)

    at processTicksAndRejections (internal/process/task_queues.js:86:5)