云函数中使用以上代码，报错内容：

Error: errCode: -404011 cloud function execution error | errMsg: cloud.callFunction:fail requestID bfef05f1-0167-11ea-985a-525400e24e59, cloud function service error code -504002, error message errCode: -1 unknown error | errMsg: parameter should be string instead of symbol;; at cloud.callFunction api;